Lads and Lasses, the Shamisen, a Japanese three-stringed instrument derived from the Chinese Sanxian. A.K.A. the boss music maker.
This instrument is SCIENTIFICALLY* guaranteed to make any activity (getting on a crowded Jeep/Bus/Train/Elevator) turn into an epic boss fight/one on one situation.
Hell, even this Geisha looks bad-ass, and that's not even a .GIF.