TBH can you post all of the current artists' singles when you start? Not everyone has amazing memory and/or knows all the singles and/or feels like googling.
1. OMG
2. DJ Got Us Falling In Love
3. Yeah!
4. Love In This Club
5. Lil Freak
Honorable Mentions: Moving Mountains, My Boo, Hey Daddy, Confessions Pt II