
(BOSSA NOVA PLAYING OVER SPEAKERS)
The Big Bang Theory Season 6, Episode 1

I have a kinda-sorta boyfriend
who's PLAYING with a model train
The Big Bang Theory Season 5, Episode 3

(THEME SONG PLAYING)
The Big Bang Theory Season 10, Episode 16

...until I cut out that time-suck
known as PLAYING outdoors.
The Big Bang Theory Season 6, Episode 3

(HARMONICA PLAYING)
The Big Bang Theory Season 10, Episode 23