The #1 song on April 15, 2009

Boom Boom Pow By The Black Eyed Peas

Other #1 songs on April 15, 2009

UK #1 Song

I'm Not Alone
Calvin Harris

#1 R&B Song

Blame It
Jamie Foxx featuring T-Pain

#1 Country Song

River of Love
George Strait

#1 Alternative Hit

Use Somebody
Kings of Leon

#1 Dance Track

Love Story
Nadia Ali