Music Composer – MIDI Annotation Project

Twine; Lavamünd; Vor Ort; EUR 48.000 - 90.000; Vollzeit

Zusammenfassung

Twine seeks experienced musicians, producers or audio engineers to create 20 high-quality recordings (3–4 minutes each) with detailed note-level MIDI annotations for AI training. Deliver one lossless audio file per recording and one annotation file per instrument, with clear tier and capture method.

Annotations must be human-verified and produced using a compatible DAW such as Logic, Ableton, or Pro Tools. Candidates should have rights to materials for AI training and commercial use, and be

Qualifikationen

• Experience as a musician, producer, composer or audio engineer.
• Ability to capture real audio and MIDI together or access to suitable archives.
• Proficiency with a DAW (Logic, Ableton, Pro Tools).
• Attention to detail for precise instrument/pitch/onset/offset annotations.

Aufgaben

• Annotate each recording with instrument, pitch, onset, and offset.
• Ensure timing accuracy within 10–20 ms across tracks.
• Deliver 20 unique recordings, each 3–4 minutes long, with per-instrument annotations.
• Indicate tier and capture method for every instrument track.
• Provide human-verified annotations and notes on genres/instrumentation.

Kenntnisse

Musician

Music Producer

Audio Engineer

MIDI Annotation

Tools

Logic Pro

Ableton Live

Pro Tools

Jobbeschreibung

This role involves contributing real music recordings paired with detailed note-level MIDI annotations for an AI training dataset. You will supply either existing or newly created tracks, ensuring each recording is 3 to 4 minutes long and accompanied by a separate annotation track for every instrument. Each note must be annotated with instrument, pitch, onset, and offset, with timing accuracy within 10 to 20 ms. The preferred workflow is capturing audio and MIDI simultaneously in your DAW, but existing multitrack archives or manual annotation are also accepted. Genres beyond pop, rock, and Western classical are especially valuable, and a diverse range of instrumentation is encouraged. Full guidance on format and labeling will be provided before you begin.

Deliverables

• Provide 20 unique music recordings, each 3–4 minutes in length, split across two quality tiers (Standard and Enhanced note-off accuracy).
• For each recording, deliver one lossless audio file (WAV or FLAC, 44.1 kHz or higher) and one annotation file (MIDI/JSON) per instrument.
• Clearly indicate the tier (Standard or Enhanced) and capture method (performed, programmed, or hybrid) for each instrument track.
• Ensure all annotations are human-verified and not generated by automatic transcription tools.
• Supply a brief note on your available genres, instrumentation, and production methods, along with relevant work samples.

Requirements

• Experience as a musician, producer, composer, or audio engineer.
• Ability to capture real audio and MIDI together, or access to an archive of suitable material.
• Proficiency with a DAW such as Logic, Ableton, or Pro Tools.
• Comfortable working to a defined delivery format and technical specification.
• Rights to all material supplied, including permission for AI training and commercial use.
• Genres beyond pop, rock, and Western classical are highly valued; recordings with vocals or diverse instrumentation are preferred.
• Strong attention to detail and accuracy in annotation.

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.