Tags: posts polarity-music Bitwig Spectral Tutorial Audio2Midi

noteGRABBER 2 - Audio to MIDI Conversion Plugin for Any DAW

Tutorial | Jul 16, 2025

noteGRABBER 2 is a plugin for any DAW that allows users to manually convert audio to MIDI by visually analyzing a sonogram and painting notes, making it easier to extract melodies, basslines, or chords from tracks.

You can watch the Video on Youtube

Short Overview

Today I explored noteGRABBER 2, a plugin that lets me manually convert audio to MIDI in any DAW using a visual sonogram. I appreciate how it allows precise note editing and extraction, making it easy to analyze songs, isolate basslines, or experiment with complex sounds. The new version includes improved visuals, a quick grab option, zoom features, and real-time note preview.

While it’s still a bit pricey, I find its workflow unique and useful when I need more control over audio-to-MIDI conversion.

Introduction

In this video, I explore noteGRABBER 2, a plugin designed for any DAW (Digital Audio Workstation) that converts audio into MIDI or note data. This allows me to use audio material to play synthesizers or other instruments by extracting the musical notes from a sound and applying them as MIDI.

Background and Previous Experiences

I previously covered NoteGrabber 1 about a year ago and found some issues with it. Recently, the developer, Navie D., reached out with the new version, noteGRABBER 2, and asked for feedback. Since I frequently used the first version, I was particularly interested in investigating what had improved.

What Makes NoteGrabber Unique

Manual vs. Automatic Audio-to-MIDI

While many DAWs like Ableton Live, Cubase, and Logic have audio-to-MIDI features built-in, these tend to be automatic and rely on algorithms to detect notes. NoteGrabber offers a manual workflow: after generating a sonogram (a visual representation of sound frequencies over time), I can paint in notes directly above the frequencies I want to extract. This means I can ignore unwanted elements like kick drums or noise and focus only on the notes I'm interested in, such as a bassline.

Sonogram and Note Painting

The plugin displays a sonogram as a background, which shows the audio’s harmonic content over time. If I want, I can then “paint” MIDI notes directly where relevant frequencies occur, allowing precise extraction of musical lines or chords.

New Features in noteGRABBER 2

Improved Visuals

noteGRABBER 2 contains updated visuals for the sonogram, making it clearer and easier to identify note content in the audio. Although I cannot directly compare both versions side-by-side, the new visual environment performs well.

Quick Grab Feature

A new “Quick Grab” slider allows for automatic filling of the detected frequencies as MIDI notes, saving time if I do not want to paint notes manually. However, this can introduce a lot of extra, unwanted notes or “junk,” which is a common issue for all automatic audio-to-MIDI algorithms.

Grid and Zoom Functions

noteGRABBER 2 now includes a grid overlay and improved zoom features. The grid is just a visual aid and does not snap notes into specific positions when painting them in. It helps to understand rhythm and bar structure in the audio to some extent.

Real-Time Preview

It is now possible to preview the notes as I paint them onto the sonogram, which allows for audibly checking my work and immediate feedback on the results.

Tweakable Gain and Range

I can adjust the display and detection sensitivity by tweaking the gain, which is necessary for getting a clear and accurate sonogram in different recording scenarios. I suggested an auto-gain function, but it is not yet implemented.

How I Use NoteGrabber

Track Analysis

One of my primary uses for NoteGrabber is analyzing tracks, especially for complex basslines and chord progressions in genres like drum and bass. Sometimes, identifying notes or chords by ear is hard, but visualizing their frequencies makes it much clearer.

Extracting and Learning From Other Tunes

By analyzing the harmonic content and extracting notes from tracks, I can learn about the underlying musical ideas, chord progressions, or scales. For example, I can see whether a song uses a whole tone or harmonic minor scale, or identify pedal tones and root notes.

Dealing With Noisy or Atonal Sounds

I also use NoteGrabber on atonal or noisy audio, such as foley or sound design samples, to find harmonic content or recurring pedal tones that I might reuse creatively in synthesis or additional layers.

Limitations and Suggestions

Lack of Microtonal and MPE Support

One significant limitation is that NoteGrabber only works with standard chromatic MIDI notes, and cannot represent harmonics that sit between standard pitches. Some frequencies lie between two MIDI notes, making perfectly accurate MIDI extraction impossible for certain sounds. I would love to see MPE (MIDI Polyphonic Expression) support so that extracted notes could include individual pitch bends, but this is technically complex and only supported by a limited number of DAWs like Bitwig and Ableton Live.

Price Concerns

I consider the plugin to be somewhat pricey at 69 dollars and believe it would be more accessible at half that cost. However, its fast, manual workflow and lack of true competitors partly justify its price.

Final Thoughts

NoteGrabber (both versions) occupies a unique space as a manual, visual audio-to-MIDI tool. While other solutions exist, most are either more automatic (and extract too many unwanted notes) or are much more expensive (like Melodyne). For anyone frequently converting audio to MIDI or analyzing musical content by eye, I find NoteGrabber very useful, despite a few feature requests and its current pricing.

Full Video Transcription

This is what im talking about in this video. The text is transcribed by Whisper, so it might not be perfect. If you find any mistakes, please let me know.
You can also click on the timestamps to jump to the right part of the video, which should be helpful.

Click to expand Transcription

[00:00:00] Hey folks, welcome back.
[00:00:01] So today it's about noteGRABBER 2 and this is a plugin that you can use in any DAW to
[00:00:07] convert audio to MIDI or to notes so you can play synthesizers with it or instruments.
[00:00:15] So audio in, you get some kind of sonogram as a graphic or visual and then you paint
[00:00:21] some notes above it and then you can pull this out and create some note clips with it.
[00:00:28] So very straightforward, very easy.
[00:00:31] And I made a video about NoteGrabber 1 almost a year ago and had some problems with it and
[00:00:36] a few days ago, Navie D. actually sent me a new version said, "Hey, this is noteGRABBER 2.
[00:00:41] We release this in a few days, maybe make a video about it, maybe give us some feedback."
[00:00:47] And that's exactly what I want to do because I actually use NoteGrabber 1 a lot in certain
[00:00:54] situations.
[00:00:55] So I know that there are many solutions on the market right now that do some kind of
[00:01:03] audio to MIDI conversion.
[00:01:05] Also in Ableton Live and Cubase and Logic, you already have something like this included
[00:01:11] inside of the DAW.
[00:01:13] But as far as I know, most of these solutions are actually kind of automatic and they rely
[00:01:19] on certain algorithms to extract these notes.
[00:01:23] And what I like about NoteGrabber is that you can actually do this manually.
[00:01:27] So you can go in here, look, oh, you can see this is your base, right?
[00:01:32] This is a base, this is a kick drum.
[00:01:34] I don't want to have this and this.
[00:01:36] I just want to paint in here a note, maybe reset this here, right?
[00:01:40] I want to have this note and this note and this.
[00:01:44] And then I can extract basically the baseline, right?
[00:01:48] So I can use your direct MIDI, pull this over and then you can see in the background here,
[00:01:54] it's just the baseline.
[00:01:58] So that's the idea and that's what I like about NoteGrabber that it's so straightforward
[00:02:01] and manual.
[00:02:03] But they also included now some additional features, not big features.
[00:02:09] It's more like an update.
[00:02:11] So they updated the visuals in the background, that's what they say in the changelogs.
[00:02:16] So it looks probably better.
[00:02:18] I can't compare it because you can only run one version.
[00:02:22] So we either have NoteGrabber 1 or 2, but it looks okay in my opinion.
[00:02:30] Then they added here something like quick grab.
[00:02:32] So you don't need to paint in these notes manually if you don't want to.
[00:02:36] You can just use the slider here, pull it up, right?
[00:02:39] And you can see it fills the visuals with these notes.
[00:02:46] But you get also a lot of junk in here and that's what I don't like.
[00:02:51] And to me, the algorithm here looks a lot like what Neural Note uses, which is this
[00:02:59] Spotify library called Perfect Pitch or something like this.
[00:03:05] It's an open source library.
[00:03:06] I guess they use this.
[00:03:07] I'm not sure about this one.
[00:03:09] Maybe they implemented their own algorithm for that.
[00:03:14] But in some cases it works, but for me, most of the times it gives you a lot of crap you
[00:03:20] don't want to, which is also true for these automatic algorithms and logic and able life.
[00:03:27] At least what I saw and when I tried it, you always get these kind of overtones you don't
[00:03:34] want to have to in these note clips.
[00:03:37] So I usually don't use it.
[00:03:40] I want to use the manual thing.
[00:03:43] We have also now here some kind of zoom feature, but everything that you change in here also
[00:03:50] here, the grid, which is also new, only works after you record it basically.
[00:03:56] So here nothing changes, right?
[00:03:59] You reset the graph and then you hit play, hit record here.
[00:04:25] So we can zoom in, zoom out or change here the overlays, which gives you an indication
[00:04:38] of I think this is just one bar from here to here is one bar.
[00:04:42] So you have an idea about the rhythm inside of the track.
[00:04:47] When you paint in notes here, it's actually not snapping to these grids.
[00:04:51] So it's just a visual overlay and nothing more, nothing less.
[00:04:56] We also have now here some kind of preview.
[00:04:59] So you can paint these notes in, you can already hear, already hear what you paint in more or
[00:05:08] less.
[00:05:09] Here's a note, there's a note.
[00:05:14] This one, I really like to paint this in actually because I can exactly see what I do here.
[00:05:24] These are the overtones, I imagine your preview here.
[00:05:36] So you can extract notes from these visuals, which is very nice.
[00:05:41] And I not only use this on tracks, because it can be sometimes very helpful to see what's
[00:05:49] going on inside of these tracks, what kind of chords they play or what kind of root note
[00:05:55] they use for the bass and sometimes you can't hear it and it's very hard to extract just
[00:06:00] by ear.
[00:06:01] And here you can see it sometimes very clearly what's going on.
[00:06:06] So let's say I have here this drum bass tune.
[00:06:09] And I think this is kind of a cool bass line in here.
[00:06:13] Maybe reset this for a moment, it's record.
[00:06:29] Right.
[00:06:30] So we can clearly see here where the bass line is.
[00:06:33] And you can tweak this a bit here with the range, with the gain.
[00:06:37] This was actually some of my feedback here.
[00:06:39] They need to implement some kind of auto gain.
[00:06:41] So you don't have to do this for yourself in a way or an offset auto gain.
[00:06:47] So it pushes the audio up to a normal level.
[00:06:51] And then you say, oh, I want to have the normal level plus minus 40B or something like this.
[00:06:56] So you have like the perfect graph in here.
[00:06:59] Anyway, so you can extract to the bass line, right?
[00:07:01] You can see here, and we don't extract to actually the snare and everything else.
[00:07:10] I just want to have the bass line.
[00:07:11] You can see the bass line here very clearly what's going on.
[00:07:17] And then you track it out and you have it then here as a MIDI or as a note clip.
[00:07:27] And you can play along or maybe just use it for your own drum bass tune, have something
[00:07:32] similar or maybe go in here and just use this one octifier, or one semitone higher, two semitones
[00:07:42] higher.
[00:07:43] But it's usually the same thing in drum bass.
[00:07:46] It's the whole tone scale or maybe harmonic minor scale or whatever.
[00:07:50] It's probably harmonic minor.
[00:07:52] Yeah, that's the root here and so on.
[00:07:57] So you can extract this pretty easily and can see what's going on in the tunes that you
[00:08:01] like and you want to copy or maybe get the same vibe or the same funkiness or whatever.
[00:08:08] And you can learn from other tracks just by analyzing here the harmonics or the notes.
[00:08:15] Also of course for chords, when you have something like this here, pretty dope sometimes.
[00:08:32] Right.
[00:08:46] So this is not very easy to track by ear what's going on.
[00:08:52] If you're not a piano player, if you don't have perfect pitch, you have no idea what's
[00:08:56] going on in the song, harmonic wise.
[00:08:59] So here you can get a sense.
[00:09:01] You can see over here is actually some kind of note going through.
[00:09:05] So this is probably the root note of the scale or, you know, and everything else moves around
[00:09:13] this kind of pedal tone or whatever.
[00:09:16] So you can get a sense of what's going on.
[00:09:19] Sometimes you can even then extract here a certain notes.
[00:09:22] You can see here, oh, this is probably chord progression as a note here, right.
[00:09:29] This is the bass and so on.
[00:09:31] So you can kind of analyze this a bit more clearly than just relying on your ear or maybe
[00:09:38] using something like tonic, which is also a cool plug in actually that finds out the
[00:09:44] root note and all the notes that are used or pitch map or something like this.
[00:09:49] Here you can see it and you can analyze it and then you can paint over the sonogram and
[00:09:55] then drag this out and you have it as a note clip.
[00:10:00] So very easy, pretty straightforward.
[00:10:02] So that's what I'm using this actually for analyzing other tunes for baselines or sequences
[00:10:09] or melodies or what's going on with chords.
[00:10:14] But I also sometimes use it for just sounds here, something like this.
[00:10:19] Let's reset this here for a moment and record.
[00:10:36] So this is a very dissonant, almost noisy, atonal sound, but you can still see some harmonics
[00:10:44] in here and you maybe can extract certain notes from it.
[00:10:49] You can maybe look here for some kind of pedal tones that go through the whole sound.
[00:10:57] Then you can use that and build something on top while you have to sample in the background
[00:11:03] or maybe you sampled something from, I don't know, from foley noises or whatever and you
[00:11:11] can extract and try to extract some harmonics from there and you can combine it then with
[00:11:16] synthesizers or other samples or whatever.
[00:11:20] So my biggest complaint in the last video and this is not really fixed or it's actually
[00:11:26] another feature and I know it's very hard to implement but what I want to see is, so
[00:11:32] let's say we have here some harmonics and I don't know, sometimes these harmonics don't
[00:11:37] fit into the chromatic scale.
[00:11:40] So they are between notes, right?
[00:11:43] So maybe this is here a bit off, this needs to be one higher but something in between,
[00:11:49] right?
[00:11:50] Between these two notes.
[00:11:52] That's not a good example here, I have a better example here, I guess this one is a bit pretty
[00:11:57] off.
[00:11:58] Let's reset this here, let's play this.
[00:12:02] This is a simple boat by Skyance, so here we can paint in a note, I think this is kind
[00:12:18] of correct but you can see it's almost not really on point so it's not on a note, so
[00:12:25] it's all over the place kind of with these harmonics and I wish they implemented something
[00:12:31] like MPE where you can paint in between notes and then when you drag out the MIDI data here,
[00:12:41] something like this, you go into that, you have all these notes but some of these notes
[00:12:48] have actually here, let's say MPE data or it's this one here, right?
[00:12:53] So in Bitwig we have your pitch per note, you can say actually have something like this,
[00:13:02] a pitch bend of this note for minus 0.21 semitones, right?
[00:13:09] And then the synthesizer plays it but I know most of the DOS don't support this, it's only
[00:13:15] enabled live and Bitwig and Bitwig has this for years but it would be so nice to have
[00:13:22] all these harmonics that are not on a note in a note clip here realized with MPE data,
[00:13:31] but I know it's not easy to implement, I know that, I tried it for myself in pure data and
[00:13:37] it's not easy to do because it's not in the MIDI standard, it's basically MPE, it's a
[00:13:43] completely new thing.
[00:13:44] I think there's one note has basically one channel, one MIDI channel and then you have
[00:13:52] a pitch bend defined on this channel.
[00:13:55] So yeah, something like this but that's what I want to use it for sometimes, right?
[00:14:00] To have these atonal sounds then extract harmonics, get the notes from it with pitch bend for
[00:14:07] each note and then you can play with this and experiment and maybe create something
[00:14:15] microtonal or whatever.
[00:14:18] But I know it's not, you know, it's just probably 1% of use cases and it's very special narrow
[00:14:25] edge case so it's not really a bug or anything that I can be mad off, it's just, you know,
[00:14:32] it's probably not in the scope of the plugin.
[00:14:35] So anyway, so this is basically how I use it, oh yeah, that's one last thing.
[00:14:43] So these basically are the new features, we have the script overlay here, we have a preview,
[00:14:48] the zooming is new, quick grab is new and yeah, the preview is new.
[00:14:54] So this is basically what they did and also the sonogram looks better, I guess.
[00:15:01] I use it for in special cases, like I said, for different reasons and there's no other
[00:15:08] plugin that does this.
[00:15:09] Most of the other plugins, like I said, are automatic algorithm based and they give me
[00:15:13] a lot of crap.
[00:15:15] I know you can do it with Melodyne, but Melodyne is super expensive.
[00:15:20] You also have to export the way file imported into Melodyne or you have to rerecord it or
[00:15:27] something like this.
[00:15:29] I tested this or used this many years ago and it wasn't my thing actually.
[00:15:38] So this one here is pretty dope.
[00:15:39] I really like it, but my last big problem with this plugin is actually the price.
[00:15:45] In my opinion, it's still too expensive, it's 69 bucks and in my opinion, it should be half
[00:15:52] the price.
[00:15:54] But at the same time, like I said, there's nothing else on the market that kind of gives
[00:16:00] you this kind of workflow.
[00:16:02] It's very quick, it's very fast and it just works kind of and I use it all the time when
[00:16:10] I want to convert actually audio to media.
[00:16:14] So I guess the price is okay then, I don't know.
[00:16:19] Maybe you can grab it on a sale or I don't know if they have some kind of upgrades, pricing,
[00:16:25] if you already own noteGRABBER 2, NoteGrabber 1, I have no idea.
[00:16:30] So I put you the link in the description below, I showed you how I use it, I also showed you
[00:16:35] what it's new and how I use it and I think that's it for this video.
[00:16:42] Thanks for watching, leave a like if you liked the video, let me know what you think
[00:16:45] in the comments down below and I'll see you in the next video, bye.
[00:16:50] [BLANK_AUDIO]