#Gotye #Somebody That I Used To Know #Kimbra #Pentatonix #Kevin Olusola #Arlington #Texas #Mitch Grassi #Avi Kaplan #Scott Hoying #Kirstie Maldonado #Sing-Off #Season Three #A Cappella #Acapella #A capella #Shawn Stockman #Boys II Men #Boyz II Men #Sara Bareilles #Ben Folds #Ben Folds Five #Nick Lachey #Afro Blue #Delilah #Vocal Point #Backbeats #cellobox #cello #beatbox #Harmony #Singing Competition #Reality TV #Dubstep #The X-factor #The Voice