The #1 song on April 30, 2011

S&M By Rihanna featuring Britney Spears

Other #1 songs on April 30, 2011

UK #1 Song

Party Rock Anthem
LMFAO featuring Lauren Bennett and GoonRock

#1 R&B Song

Look at Me Now
Chris Brown featuring Lil Wayne & Busta Rhymes

#1 Country Song

This
Darius Rucker

#1 Alternative Hit

Rope
Foo Fighters

#1 Dance Track

Good Girl
Alexis Jordan