The #1 song on September 21, 2010

Teenage Dream By Katy Perry

Other #1 songs on September 21, 2010

UK #1 Song

Start Without You
Alexandra Burkefeaturing Laza Morgan

#1 R&B Song

Deuces
Chris Brown featuring Tyga & Kevin McCall

#1 Country Song

Our Kind of Love
Lady Antebellum

#1 Alternative Hit

The Catalyst
Linkin Park

#1 Dance Track

Wouldnit (I'm a Star)
Ono