`c4`, `f#3`, `bb5` now evaluate to themselves, the way a number does. Without this the voices were unusable: every bare note resolved as an undefined variable and threw "Unknown KidLisp word: e4". Only when nothing else has claimed the name — so a variable you defined called `e5` still wins. A language you can't say out loud is one nobody writes music in. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>