https://yestino.com/entities/xy-music-notation-5fb557Every event involving XY Music Notationenhttps://yestino.com/events/show-hn-xy-music-notation-55882ahttps://yestino.com/events/show-hn-xy-music-notation-55882aTue, 13 Oct 2026 17:43:05 GMTI've been playing around with a new kind of isomorphic music keyboard that uses a base-12 notation, and wanted some sheet music to learn some new music for it. Sources: Hacker News