Think of a musical instrument

[koganbot]

Think of a musical instrument.

What was the first instrument that crossed your mind when I instructed you just now to think of a musical instrument?

(See comments.)

Comments

[arbitrary-greay.livejournal.com]

I'm at the stage of life where many, many introductory conversations are had, and "What do you play?" always comes up when they learn I play, so any close variation of the question will cause the mental-muscle-memory response to trigger, and "percussion" will spring to the tongue, perhaps before I even think it.