3.8 / 5

Live Score

See standard music notation appear in real-time as you play

Serious

Instant

The Problem

Transcribing played music to notation is slow; ideas are forgotten before notated

Current Solutions (Not Great)

Notation software (manual entry), audio-to-MIDI (slow, inaccurate), write by hand (slow)

Who Needs This

Composers, music teachers, arrangers, students transcribing solos

You play a melody or improvisation—Live Score shows it as sheet music in real-time. Not just a MIDI piano roll, but proper notation: note values, bar lines, key signature, accidentals handled correctly. It's instant transcription that captures your musical ideas before they evaporate. Play a phrase, see it notated, export it for your score. Perfect for composers sketching at the piano, teachers transcribing students, or anyone who thinks in sound but needs output in notation.

Honest Take

Real-time notation is actually less common than you'd think—most DAWs do MIDI-to-notation but it's clunky. The challenge is making the output look professional, not just algorithmically correct (quantization, enharmonic spelling, beam grouping). If you nail the notation quality, composers would actually use this.

Monetization Ideas

Ways to turn this into revenue

Freemium

Free basic, $5-15/mo for pro

One-Time Purchase

$9-49 per license

Subscription

$5-29/month or $49-199/year

Features

Key features that make this app valuable

Real-time MIDI to notation
Intelligent rhythm quantization
Key signature detection
Proper enharmonic spelling
Bar line and time signature handling
Multiple staves (treble/bass/grand staff)
Export to MusicXML/PDF
Edit after capture

Build Prompt

Use this prompt with an AI assistant to start building

Build a React PWA called 'Live Score' using WebInfer, Web MIDI API, and VexFlow (music notation rendering). MIDI input: capture note events with timestamps. Buffer notes by measure (detect downbeats from patterns). Quantization: AI determines best rhythm values with generateObject: { notes: [{ pitch: number, onset: number, duration: number }], quantized: [{ pitch: number, beat: number, rhythmValue: string }], timeSignature: string, suggestedKey: string, alternativeQuantizations: object[] }. Enharmonic spelling: AI chooses sharps vs flats based on key context. Notation rendering: VexFlow draws staff, clef, key signature, notes. Real-time update: new measures appear as you complete them. Multi-staff: detect bass vs treble range, split to grand staff. Editing: tap notes to adjust pitch/rhythm after capture. Export: MusicXML for Finale/Sibelius, PDF via canvas rendering, MIDI file. Settings: quantization strictness (tighter for classical, looser for jazz), default key, staff type. Audio playback: play back notation via Web Audio to verify transcription accuracy.

Score Breakdown

Pain