The #1 song in the UK on April 15, 2009

I'm Not Alone By Calvin Harris

Other #1 songs on April 15, 2009

#1 Hit Song

Boom Boom Pow
The Black Eyed Peas

#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