A backstage video of late-night host Jimmy Fallon, Carly Rae Jepsen and The Roots surfaced Friday showing the gang performing Jepsen's infectious "Call Me Maybe."
We spy 12 instruments throughout the clip: triangle, wood block, tambourine, bass drum, washboard stick, kazoo, recorder, bongos, ukulele, melodica, toy xylophone and tambourine.
"Call Me Maybe," which hit number one on the iTunes singles chart and Billboard�s Digital Songs chart in May, has been covered, lip-dubbed and danced to by countless athletes (see gallery below), musicians, digital versions of Barack Obama and Mitt Romney, a public relations agency and many more people on YouTube.
Most recently, a mashup of Obama's words was turned into a "Call Me Maybe" video.
The song's original video has 97.8 million views while Jepsen's second video (featuring cameos from Bieber, Gomez and Ashley Tisdale) has nearly 41.4 million.
BONUS: Watch 11 Sports Teams Rock Out to �Call Me Maybe�