SEM BM
Byzantine-chant learning games
Relaunched a legacy FileMaker curriculum as a live bilingual web app: 29 playable exercises across 9 game mechanics, with every note synthesized at runtime so no audio files ship.
Press Begin chant to hear the melody, then echo it back.
Opens the live app.
Open live app ↗︎SEM BM relaunches a legacy FileMaker music curriculum as a live web app for a school of ecclesiastic music. Nine game mechanics (sequence-order, link-match, interval logic, scale sight-reading, a timed Tetris mode, memory, maze, guess, reading) cover 29 exercises in 4 chapters, all built on Byzantine 7-note scale arithmetic; a seeded Fisher-Yates shuffle makes any run replayable from its recorded seed. Every tone is synthesized at runtime via the Web Audio API (sine oscillators, soft attack/release envelope, anchored on Ni = C4), so no audio files ship. Reference grids carry both Western solfege (Do/Re/Mi) and Byzantine (Ni/Pa/Vou) labels; tapping either plays the same canonical note. Accessibility is baseline, not retrofit: skip link, visible focus outlines, prefers-reduced-motion support, and aria labels sourced from the shared note-label map that also drives the English/Arabic RTL UI. Supabase Postgres with RLS, email plus Google auth, and Storage back it; guest progress persists in localStorage and max-merges with server progress. ~68 TS/TSX files (~9,900 LOC) over 12 SQL migrations.
- Next.js 15
- React 19
- TypeScript
- Tailwind CSS v4
- Supabase
- Web Audio API
- Vercel
- Exercises
- 29
- Game mechanics
- 9
- Languages
- EN + Arabic (RTL)
- Source
- 68 files · ~9,900 LOC
What I'd improve
The synth uses 12-TET piano frequencies as an explicit placeholder; authentic Byzantine intonation is the Chrysanthine 72-EDO system, so the next step is real morae-based intervals or recorded chant takes behind the same playNote API. Also open: the Chapter 2 key glyphs are programmatic placeholders pending authentic notation artwork, and guest progress is not yet back-filled into Supabase when a player signs in mid-session.