1. Is there some kind of weird vocal vortex in Minnesota? Watch the a cappella ensemble Cantus present widely divergent songs from American, European and Sufi traditions at the Tiny Desk. 
Photo: Ryan Smith/NPR

    Is there some kind of weird vocal vortex in Minnesota? Watch the a cappella ensemble Cantus present widely divergent songs from American, European and Sufi traditions at the Tiny Desk.

    Photo: Ryan Smith/NPR