Ever wondered how Tariq got the name Black Thought or how Questlove was dubbed with such a curious nickname? In an "Ask The Roots" segment, the hip-hop crew recounts how each member got their monikers. Afterwards, watch The Roots make their way to The Tonight Show, alongside Jimmy Fallon and Idina Manzel, to help perform Academy Award-winning song “Let It Go” from the animated feature Frozen. The performance is complete with assorted kazoos, ukuleles, and mini xylophones. Hit the jump to watch both clips.