Music And Sound Annotation Expert

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.

What it pays and takes

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

• Pay: $30 to $45 per hour.
• Time: 20 or more hours per week.
• Language: Clear written English for concise notes.
• Location: Open to candidates in Argentina, Brazil, Canada, Chile, Colombia, Mexico, Peru, and the United States.
• Location: Open to candidates in Austria, Belgium, Switzerland, Germany, Denmark, Spain, France, the United Kingdom, Greece, Italy, the Netherlands, and Portugal.
• Location: Open to candidates in Bangladesh, Indonesia, India, Japan, Kyrgyzstan, Kazakhstan, Sri Lanka, Malaysia, the Philippines, Pakistan, Singapore, Thailand, Taiwan, Uzbekistan, and Vietnam.
• Location: Open to candidates in the United Arab Emirates, Bahrain, Algeria, Egypt, Ghana, Jordan, Kenya, Kuwait, Lebanon, Morocco, Nigeria, Oman, Palestine, Qatar, Saudi Arabia, Tunisia, and South Africa.
• 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.
• 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 it works

You apply here in about two minutes and finish on the hiring platform. The next step is a short AI interview (technical roles include a coding challenge). Passing it is how you qualify for paid tasks, so take it soon after you are invited.

The hiring platform's application for this job asks for your resume, your LinkedIn profile, your phone number, your location and answers to 6 screening questions.

About AI training work

AI training is the human work behind artificial intelligence. Contributors label or review examples such as audio recordings so AI systems can learn to understand and describe real-world content. OpenTrain is a platform where people find these projects, build a profile, and apply to start or grow a career in AI training and data labeling.