The upright bass (or double bass, contrabass, string bass, or bass violin) is a rather conservative, stayed instrument. Of the violin family tree, it appears to be the most root-bound member. Enter the Upright Double Bike. 100 watts of amplification, pushed through 4 musical instrument speakers and a pair of tweeters, powered by 36 volts of onboard batteries, and all rolling on wheels, this postmodern revision finally gives bicycle artists everywhere the wherewithal to really get on down.

 

Upright Double Bike