Somebody That I Used To Know — Mix of 2 A Cappella Covers!! (Pentatonix + Straight No Chaser) Nov 7, 2015 Cover, Cover A Cappella, Cover Mix, Cover Pentatonix, Cover somebody that i used to know, Cover Straight No Chaser, Under The Influence (The Fan Edition), Volume 1, Like 0 Thanks! You've already liked this « How do you keep the Music playing by James Ingram and Patti Austin (cover by Tim and Cherry) » How can I tell her- piano cover by Bernard Gabriel