The #1 song on January 13, 2009

Just Dance By Lady Gaga featuring Colby O'Donis

Other #1 songs on January 13, 2009

UK #1 Song

Just Dance
Lady Gaga featuring Colby O'Donis

#1 R&B Song

Single Ladies (Put a Ring on It)
Beyoncé

#1 Country Song

Already Gone
Sugarland

#1 Alternative Hit

Sex on Fire
Kings of Leon

#1 Dance Track

Single Ladies (Put a Ring on It)
Beyoncé