SwarSadhna — Indian Classical Music Practice Tool

Overview

SwarSadhna is a practice tool for Indian classical vocalists and instrumentalists. The app listens to the microphone in real time using pitchy for FFT-based pitch detection, maps detected notes to the active raga's swar set, and plays a continuous tanpura drone via Tone.js. Serwist service-worker integration makes the tool fully functional offline after first load.

Tech

Next.js 16 App Router provides the SSR shell. pitchy processes Web Audio API input for low-latency pitch detection. Tone.js synthesises the tanpura drone with configurable tuning. Zustand manages session state and practice history. Serwist handles PWA caching and offline support.