Hammer, strings, soundboard.
An early physical-model experiment. The hammer strikes the strings; a moving bridge couples them to the soundboard. No recorded piano samples.
Debussy · Arabesque No. 1
The opening passage, with the same notes and timing in both versions. Playback levels are balanced.
Play the music directly—no piano keyboard needed.
Low notes
A short phrase through C2–C4.
High notes
The same gesture higher up, through C5–C7.