myNNS.app

Nashville Number System · charting engine

v0.6.3

Song

Key

Meter

deg

qual

rhythm

bar

Click a bar to select it, then tap a degree. Symbols layer on top.

Common progressions - click to append as a new section

Prototype scope: full NNS entry - degrees, qualities, diamonds, pushes, marcato/staccato, split bars, beat dots, section structure, and live number-to-letter mapping off the key strip. Change the key and every letter re-renders while the numbers stay put - that's the whole point of the system.
v0.6: chord audio is now fully local - diatonic triads for all 12 keys built in, no network calls. 7ths and borrowed/altered chords are synthesized on the fly. Following NNS practice, chords default to major - the 7 and any borrowed (♭/♯) chord sound major unless you tap minor or °.
v0.6.2: a synthesized 4-on-the-floor kick with cajon support holds the beat during play chart. Chords and drums now run on one audio-clock transport, so every chord onset locks to the kick with no drift - RHYTHM (diamond/push/marcato/staccato) and BAR (split) choices are audible against a rock-steady pulse. Toggle the kit with the drums button. All voices route through a five-knob mixer rack (guitar, piano, kick, cajon, master) into a shared limiter, so stacked chords + drums no longer clip. The piano was pulled forward with a shorter tail to match the guitar's presence.
v0.6.3: the mixer rack now remembers your levels between sessions (saved locally in your browser). Double-click a knob to reset it.
Phase 2: real-time multi-user sync (shared chart, live edits across devices) - backend wiring, built once this entry model feels right.