Fret App

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  Homepage

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  Recording Page

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  Analyzing Page

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  Feedback Page

Fret is a mobile-first music practice assistant that uses Gemini 3's multimodal audio understanding to provide real-time feedback on your playing.

Gemini 3 Integration

Fret sends raw audio recordings directly to Gemini 3 for analysis - no preprocessing, transcription, or MIDI conversion needed. The model listens to actual microphone input and identifies timing inconsistencies, technique issues, and musical patterns. It then generates structured feedback: what was played, specific strengths, concrete areas to improve, and targeted practice exercises.

Why This Matters

Previous AI music tools required perfect audio conditions or specialized equipment. Gemini 3's multimodal audio understanding handles real-world phone mic recordings - background noise, room acoustics, and all. This makes AI-powered practice feedback accessible to anyone with a phone.

Technical Implementation

The app uses instrument-specific prompts (guitar, piano, voice) with anti-hallucination safeguards - Gemini is instructed to explicitly state when it cannot detect the instrument rather than fabricating feedback. Audio is captured via Web Audio API, converted to base64, and sent to the Gemini 3 API with context about what the user is practicing.

The Result

Musicians get the kind of specific, actionable feedback that previously required a human teacher - instantly, for free, during any practice session.

Built With

• css3
• eslint
• framer
• gemini
• html5
• javascript
• postcss
• react
• tailwind
• vite