Music Demixer

Transform any audio file into accurate sheet music, MIDI, and isolated stems with high-fidelity separation for musicians, producers, and transcriptionists.

Free plan available

$9.99/mo

About Music Demixer

Music Demixer is an advanced AI-powered platform designed to deconstruct audio files into their fundamental components. It allows users to convert MP3, WAV, and FLAC files into editable formats like MusicXML and MIDI, or to separate a full mix into individual instrument stems. The core purpose of the tool is to bridge the gap between recorded audio and creative manipulation, whether that involves detailed transcription, remixing, or educational analysis. By utilizing sophisticated machine learning models, it provides high-fidelity outputs that preserve the nuances of the original performance. The tool operates through several specialized modes tailored to different musical needs. For complex arrangements, the Multi-Track MIDI feature generates a full-score draft across multiple instruments simultaneously. For focused tasks, users can isolate specific stems—such as vocals, drums, bass, guitar, and piano—before performing transcription to ensure the cleanest possible results. A standout feature is its Piano HD mode, which boasts 96% note accuracy and captures intricate details like left/right hand separation and sustain pedal events. It also provides a unique drum kit breakdown, splitting percussion into kick, snare, toms, and cymbals while generating corresponding drum notation and MIDI. This platform serves a diverse range of users within the music industry. Session musicians can use it to isolate specific parts for practice, while producers and remixers benefit from high-quality stem separation and vocal removal, including specific lead vs. backing vocal splits. For composers and arrangers, the ability to generate MusicXML and MIDI directly from audio significantly speeds up the transcription process. It is particularly useful for those working in DAWs who need ready-to-use MIDI data from legacy recordings or complex demos where original project files are unavailable. What distinguishes Music Demixer from competitors is its focus on high-fidelity transcription and privacy. By processing most audio directly within the user's browser, it ensures data security while maintaining high performance. Its specialized handling of lead and backing vocals, along with its granular drum kit breakdown, offers a level of detail often missing in general-purpose demixing tools. Furthermore, the integration of sheet music generation alongside stem separation makes it an all-in-one workstation for musical analysis and production.

Music Demixer pros & cons

Pros

Achieves 96% piano note accuracy including sustain pedal and hand separation.
Processes audio locally in the browser for enhanced privacy and security.
Splits vocals into lead and backing tracks rather than just a single vocal stem.
Provides specific drum kit isolation for kick, snare, toms, and cymbals.
Exports both MIDI and MusicXML for high compatibility with DAWs and notation software.

Cons

Requires a modern computer and up-to-date browser for optimal local performance.
Complete processing of some specialized tools may briefly require server-side resources.
Free access is strictly limited to a 3-day trial period after registration.
Stem separation is limited to a maximum of six specific instrument categories.

Music Demixer use cases

Piano teachers can convert recordings into 96% accurate sheet music with separate notation for left and right hands to assist students.
Music producers can extract high-quality stems and MIDI from old samples to remix or rebuild tracks in their digital audio workstation.
Vocalists can isolate backing harmonies from lead vocals to create custom practice tracks or cleaner karaoke versions of complex songs.
Drummers can break down a full kit into kick, snare, and cymbals to study specific patterns and export them as drum-specific MIDI data.
Composers can use the multi-track MIDI feature to quickly generate a full-score draft of a dense arrangement from a single audio file.

Music Demixer features

musicxml export support
multi-track midi generation
piano hd with hand separation
drum kit breakdown (kick, snare, toms, cymbals)
lead and backing vocal splitting
6-stem separation
audio to midi transcription
mp3 to sheet music conversion

Music Demixer pricing

Is Music Demixer free? Yes, Music Demixer has a free plan, and paid plans start at $9.99 / month.

Free Trial

Free

3-day access
Unlimited songs
Privacy-first processing
Supports MP3/WAV/FLAC
Secure checkout via Stripe
Cancel anytime

Pro

$9.99 / month

Unlimited songs
Sheet music (MusicXML)
DAW-ready MIDI
6-stem separation pack
Lead + Backing Vocals split
Drum kit pieces + MIDI
Piano HD (hands + pedals)
Private browser-based processing

Music Demixer FAQs

Will Music Demixer work in my web browser?

Music Demixer works best on modern computers using up-to-date browsers. The application runs a compatibility check upon launch to choose the safest processing mode for your hardware.

What audio formats are supported for upload?

The tool supports most common formats including MP3, WAV, FLAC, M4A/AAC, OGG, and AIFF. If a file requires conversion, the app handles the process automatically during the upload phase.

How does the tool handle user privacy and file storage?

The service is private by default as most processing runs directly in your browser. While some tools may briefly use server-side resources to generate results, files are not permanently stored on the service.

How does the 3-day free trial work?

New users can start a 3-day Pro trial after signing up, which provides access to all tools for unlimited songs. You can cancel the trial at any time from your account settings page.

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