The #1 alternative song on March 21, 2013

Radioactive By Imagine Dragons

Other #1 songs on March 21, 2013

#1 Hit Song

Harlem Shake
Baauer

UK #1 Song

Mirrors
Justin Timberlake

#1 R&B Song

Thrift Shop
Macklemore & Ryan Lewis featuring Wanz

#1 Country Song

Sure Be Cool If You Did
Blake Shelton

#1 Dance Track

Oh Mama Hey
Chris Cox and DJ Frankie featuring Crystal Waters