She says, "Do you play
an INSTRUMENT?"
The Big Bang Theory Season 5, Episode 4
"Hey, wanna come over to my house
and hear me play an INSTRUMENT...
The Big Bang Theory Season 6, Episode 18
In a world where a piano is a weapon,
not a musical INSTRUMENT...
The Big Bang Theory Season 4, Episode 3
Maybe sometime you can
try that on my INSTRUMENT.
The Big Bang Theory Season 1, Episode 5
...nor does she intend to play a percussive
or brass INSTRUMENT.
The Big Bang Theory Season 2, Episode 10