Unknown Mortal Orchestra performs live at the Rock and Roll Hotel in Washington, D.C., on Feb. 27, 2013. Lizzie Chen/NPR Music hide caption

itoggle caption Lizzie Chen/NPR Music

Front Row

Unknown Mortal Orchestra: NPR Front Row

Watch the band perform "No Need for a Leader," a tremendous cocktail of riff-rock and psychedelia.

M R Shajarian performs a Tiny Desk Concert in March 2013. Marie McGrory/Marie McGrory/NPR hide caption

itoggle caption Marie McGrory/Marie McGrory/NPR

Tiny Desk Concerts

Mohammad Reza Shajarian

The 73-year-old Iranian icon unleashes torrents of swooping, soaring sound that elicit goosebumps.