Sequencer using Tone.js. Your Salamander Grand Piano V3 pack
(48khz24bit WAVs, CC-by) uses many velocity layers per note (C4v1.wav…v16).
This app copies one layer (v10) per note into salamander-local/ and maps the same
minor-third grid as the Tone.js MP3 demo. “Piano (web)” uses small MP3s from
tonejs.github.io instead (no large local files).