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Music Composer – MIDI Annotation Project

  • Canada

Contract

This opening has closed.

The original listing is kept below for reference.

Job details

Job type
Contract
Posting language
English
Posted

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Original job description

Archived listing. The details below describe a past opening.

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.

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More about this job

Responsibilities

Provide 20 unique recordings, each 3–4 minutes long, with lossless audio and human-verified, note-level MIDI or JSON annotations for every instrument. Label each track with its quality tier and capture method, and provide information about available genres, instrumentation, production methods, and relevant work samples.

Requirements

Applicants should have experience as a musician, producer, composer, or audio engineer, proficiency with a DAW such as Logic, Ableton, or Pro Tools, and the ability to record audio and MIDI together or access suitable archived material. They must follow the specified delivery format, ensure accurate human-verified annotations, and hold rights permitting AI training and commercial use of all supplied material.

Skills

  • Music Composition
  • Music Production
  • Audio Engineering
  • MIDI Annotation
  • Music Performance
  • Digital Audio Workstation Proficiency
  • Audio Recording
  • Multitrack Recording
  • Music Transcription
  • Pitch and Timing Accuracy
  • WAV and FLAC Audio Formats
  • MIDI and JSON
  • Quality Control
  • Attention to Detail
  • Rights Management

Visa sponsorship

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Categories

  • Creative & Media
  • Art & Design

Keywords

  • Music Composer
  • MIDI Annotation
  • AI Training Dataset
  • Note-Level Annotation
  • Instrument
  • Pitch
  • Onset
  • Offset
  • Note-Off Accuracy
  • Digital Audio Workstation
  • Logic
  • Ableton
  • Pro Tools
  • WAV
  • FLAC
  • MIDI
  • JSON
  • 44.1 kHz
  • Lossless Audio
  • Multitrack Archives
  • Manual Annotation
  • Human-Verified Annotations
  • Audio and MIDI Recording
  • Standard and Enhanced Tiers
  • Performed, Programmed, and Hybrid Tracks
  • Music Production
  • Audio Engineering
  • Commercial Use Rights

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