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Beginner10h1
DuckDBNext.js
17/20Music Ear Trainer
Train intervals, chords and rhythm with instant feedback.
Beginner10h1 person17/20 fit
Build Music Ear Trainer for music students in ~10h with 1 person. Stack: Web Audio + JavaScript + FSRS.
Why it wins: Fun audio project.
Build flow
01 · Problem
Ear training apps are dull or expensive.
02 · Solution
Play intervals and chords with Web Audio, quiz the learner and adapt difficulty with spaced practice.
03 · Build
- 1Synthesise sounds
- 2Build quizzes
- 3Track accuracy
- 4Adapt
04 · Demo
Identify three intervals live.
MVP checklist
- Interval quiz
- Chord quiz
- Rhythm mode
- Adaptive practice
Tech stack
| Tech | Role | |
|---|---|---|
| Web Audio | Audio analysis + synthesis | Device |
| JavaScript | Game / app logic | Web |
| FSRS | Spaced-repetition scheduler | Tool |
Reference repos
Open-source projects you can build on. Links checked 2026-10-31.
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