[snakajima]

The synthesized piano is removed, and lessons and examples now use grandpiano, the recorded Steinway. This is a breaking change, so both packages go to 0.11.0.

What changes for a score

• A track or custom instrument whose base is "piano" now fails checkScore with:
  "piano" was removed in 0.11.0; use "grandpiano" instead.
getInstrument and jinglescript instruments piano say the same.
• A score may still define its own instrument called "piano".
• In sheet music, a grand-piano part with no name is printed "Piano".

Where the synth went

• It is now tests/piano-synth.ts. Its only use is to make the stand-ins for the grand piano's recordings (tests/sample-fixture.ts).
• So tests stay offline, and every existing grandpiano golden hash still holds.

Examples, guide, tests

• Seven examples move to grandpiano, with new golden hashes: three lessons (C major scale, Twinkle, Happy Birthday), layered-hit, lyrics-hatena, piano-ukulele-claps and riser-reveal.
• a-piano.json is deleted, since a-grandpiano.json already shows the piano.
• None of the non-lesson examples gives a len, so their notes still ring out as before. The lessons give len, so the dampers now end each note there.
• The guide now says grandpiano is the piano, and its custom-layer and sheet-music examples use it.
• Tests that used the piano as a ringing coded instrument use grandpiano with the stand-ins. Tests where the instrument doesn't matter use a vibraphone or marimba.
• The smoke test renders the lyrics example without its grand-piano track, so it stays offline.

Measured, with the real recordings

example	LUFS (grand piano / old piano)	true peak (dBTP)
learn-c-major-scale	−14.0 / −14.0	−1.8
learn-twinkle	−14.0 / −14.1	−1.8
learn-happy-birthday	−14.0 / −14.0	−1.8
layered-hit	−14.4 / −14.5	−1.8
lyrics-hatena	−14.0 / −14.0	−1.8
piano-ukulele-claps	−14.1 / −14.3	−1.8
riser-reveal	−15.6 / −16.2	−1.7

riser-reveal is held below the loudness target by the peak ceiling. That was already the case with the old piano.

Verification

• format, lint, typecheck: pass
• Root tests: 714 passed, 100 skipped
• Plugin: typecheck and 192 tests pass
• smoke.sh: pass
• Not yet: listening to the renders (out/grandpiano/, with the old piano in out/old-piano/)

🤖 Generated with Claude Code

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