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Music And Sound Annotation Expert

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Job details

Pay

$30–$45 USD/hr

Engagement

Contract, part-time

Location

Remote

52 countries

Posted

Oct 31, 2026

OpenTrain on Trustpilot

The work

You will support audio-focused AI training by listening closely to short field recordings and documenting what you hear. The work includes structured annotation, music analysis, comparison of recordings, and quality review of AI-generated descriptions.

You will use quality headphones in a quiet workspace and provide concise, evidence-based notes. A paid onboarding and calibration session and a short weekly sync are also part of the role.

  • Listen to 30 to 90 second recordings and identify instruments, tempo, musical key, crowd reactions, background sounds, and other scene details.
  • Add timestamps for audible events such as traffic, sirens, and applause using dropdowns, structured annotations, and concise notes.
  • Compare paired recordings of the same song and identify which characteristics stay consistent or change between locations.
  • Review AI-generated audio descriptions and mark details as correct, wrong, or invented, with brief explanations based on the recording.

Requirements

It requires at least three years of hands-on music or audio experience, along with strong listening and written communication skills.

  • Time: 20 or more hours per week.
  • Language: Clear written English for concise notes.
  • Skills: Identify tempo within a few beats per minute and determine musical key, with a reference allowed for relative pitch.
  • Equipment: Quality headphones, a quiet workspace, and reliable internet.
  • Skills: analytical listening, music theory knowledge, audio annotation, attention to detail, written communication

Open to applicants in

  • Algeria
  • Argentina
  • Austria
  • Bahrain
  • Bangladesh
  • Belgium
  • Brazil
  • Canada
  • Chile
  • Colombia
  • Denmark
  • Egypt
  • France
  • Germany
  • Ghana
  • Greece
  • India
  • Indonesia
  • Italy
  • Japan
  • Jordan
  • Kazakhstan
  • Kenya
  • Kuwait
  • Kyrgyzstan
  • Lebanon
  • Malaysia
  • Mexico
  • Morocco
  • Netherlands
  • Nigeria
  • Oman
  • Pakistan
  • Palestine
  • Peru
  • Philippines
  • Portugal
  • Qatar
  • Saudi Arabia
  • Singapore
  • South Africa
  • Spain
  • Sri Lanka
  • Switzerland
  • Taiwan
  • Thailand
  • Tunisia
  • United Arab Emirates
  • United Kingdom
  • United States
  • Uzbekistan
  • Vietnam

Preferred

  • Helpful backgrounds include musician, session player, producer, mixing engineer, music educator, ear-training instructor, band or choir director, conservatory student or graduate, location sound recordist, sound designer, foley artist, or podcast or documentary audio editor.

How to apply

  1. Press Apply now. You create a free OpenTrain account and add your resume.
  2. Finish your application on the hiring company's site. The company decides who it hires, so it runs its own form. It asks for your resume again, your LinkedIn profile, your phone number, your location and answers to 6 screening questions.
  3. Take a short AI interview.

OpenTrain on Trustpilot

Job ID: cmvwi4iuo00cc08jk4wppck64

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