It's pretty strange catching Ty Segall on your late-night TV dial, but the man has certainly earned it. After releasing Twins--Segall's third album of the year--the garage rocker has taken to the late-night circuit, first appearing on Conan last month and last night he swung by The Late Show With David Letterman. He and his band ripped through "You're The Doctor," which appropriately ended with feedback, chaos, and Segall shouting "go vote!" into the microphone. And of course, Letterman wraps it up with a grin: "Remember kids, don't neglect your studies." Watch the madness below.