Music Producer – MIDI Annotation Project

On-site
Posted Sep 27, 2026
1 position

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Employment type: Contract
Experience level: Entry, Junior · 0+ years
Posting language: English
Working hours: 40 hours per week
Seniority: Entry level

Job summary

Provide a 3–4-minute real music recording featuring exactly three or four instruments, along with two MIDI files: the DAW-captured version and a version with note endings corrected to match the audio. Submit a lossless WAV file, both MIDI files, and a completed metadata sheet for each song, ensuring the audio and MIDI are accurately aligned and all required rights are secured.

Job details

This role involves contributing real music recordings paired with precise MIDI annotations for an AI training dataset. The project requires musicians, producers, or audio engineers who can supply existing or newly recorded tracks featuring exactly three or four instruments, including vocals if desired. The focus is on genres such as Jazz & Blues, Electronic & Hip Hop, Folk/Singer-songwriter, Heavy Metal & Rock, and Contemporary & Classical. Candidates with finished tracks and available session files are especially encouraged to apply, as minor edits to fit the requirements are acceptable. The work is ideal for those with access to a DAW and the ability to export and correct MIDI files to match audio recordings with high accuracy. Deliverables Provide one real audio recording (3–4 minutes) featuring exactly three or four instruments per track. Submit two MIDI files per song: one as captured by your DAW and one with every note ending corrected to match the audio precisely (within 10–20 ms). Ensure at least one instrument is genuinely performed; a mix of performed and programmed parts is acceptable. Include sung vocals if desired; rap or spoken vocals are not suitable for note-level annotation. Deliver a lossless WAV file (44.1 kHz or higher), both MIDI files, and a completed metadata sheet for each song. Ensure all audio and MIDI are captured in the same take, from existing DAW archives, or via manual transcription with hand-checked accuracy. Follow provided guidance and deliver within one week of song approval. Requirements Proficiency with a DAW such as Logic, Ableton, Pro Tools, or Reaper. Access to existing recordings that fit the criteria or the ability to capture real audio and MIDI together. Full rights to all submitted material, including permissions for AI training and commercial use (all co-writers and performers must have agreed). Attention to detail in aligning MIDI note data with audio. Ability to provide clear documentation and metadata for each submission. Strong organizational skills and the ability to meet tight deadlines. About Twine Twine is a leading freelance marketplace connecting top freelancers, consultants, and contractors with companies needing creative and tech expertise. Trusted by Fortune 500 companies and innovative startups alike, Twine enables companies to scale their teams globally. Our Mission Twine's mission is to empower creators and businesses to thrive in an AI-driven, freelance-first world.

What you’ll do

Requirements

Candidates need proficiency with a DAW such as Logic, Ableton, Pro Tools, or Reaper, and access to suitable recordings or the ability to record audio and MIDI together. They must have full rights and permissions for submitted material, accurately align MIDI notes with audio, provide clear metadata, and meet the one-week delivery deadline.