When a musician says they have a date with Cristofori, they are referring to Bartolomeo Cristofori, the inventor of the pianoforte. It means they need to go practice the piano.
Girl 1: Want to go to the basketball game tonight? I have an extra ticket.
Girl 2: Sorry. I have a date with Cristofori.
Girl 2: Sorry. I have a date with Cristofori.
by memusic February 6, 2012