Music Expert — AI Evaluation & Annotation (Generative Music)

Mercor is hiring professional musicians, producers, and musicologists to evaluate and annotate AI-generated music for a frontier generative-music AI lab.

You'll work on structured, high-signal tasks that turn subjective musical quality into data the lab can act on:

• Preference labeling — given two AI-generated tracks for the same prompt, judge which is stronger on specific dimensions (faithfulness to the source, instruction-following, audio fidelity & production, vocal quality, musicality) and write a clear rationale.
• Music captioning — write precise, schema-consistent descriptions of a track: genre & style, instrumentation, structure with timings, key/tempo/feel, vocals, and production/era.
• Lyric alignment — mark word-by-word start/end timing (karaoke-style), correct the transcript where words were dropped or looped, and flag pronunciation and repetition artifacts.

You're a fit if you:

• Are a trained musician with strong critical listening across multiple genres and languages
• Can hear and articulate whether an output is faithful, well-produced, and on-spec
• Are comfortable applying structured rubrics and writing clear, falsifiable justifications
• Bonus: production/mixing experience, formal music theory, or multilingual lyric fluency

Details: Remote · flexible hours · short calibration (Rubric Academy) before staffing · background check + confidentiality agreement required. Genres and languages matched to your strengths.

We consider all qualified applicants without regard to legally protected characteristics and provide reasonable accommodations upon request.

Contract and Payment Terms

• You will be engaged as an independent contractor.
• This is a fully remote role that can be completed on your own schedule.
• Projects can be extended, shortened, or concluded early depending on needs and performance.
• Your work at Mercor will not involve access to confidential or proprietary information from any employer, client, or institution.
• Payments are weekly on Stripe or Wise based on services rendered.
• Please note: We are unable to support H1-B or STEM OPT candidates at this time.