Lady Gaga’s “Born This Way” gestates for its fourth week at No. 1 on the Billboard Hot 100 as the top 10 remains fairly static. The only new entry is Ke$ha’s “Blow,” whose unicorns carry it on gilded wings 11-7 (If you don’t get that reference, watch the video here).

Jennifer Lopez’s “On the Floor”  takes the biggest leap within the Top 10 rising 9-5, making it her first bonafide hit since 2003, according to Billboard.

The highest debut belongs to Britney Spears as “Till the World Ends” starts at No. 20, a respectable bow considering it was only available for download for three days on iTunes. The tune, co-written by Ke$ha, is the second single from Spears’ March 29 album, “Femme Fatale.”  First single, “Hold It Against Me,” debuted at No. 1.

Back to the Top 10, Cee-Lo’s “Forget You” holds at No. 2 for a third week, while Rihanna’s “S&M” whips its way up 5-3.  Pink’s “F**kin’ Perfect”  stays at No. 4, Bruno Mars’ “Grenade” slips 3-6. Katy Perry still has two tunes in the Top 10 as “E.T.” featuring Kanye West remains at No. 8, while “Firework” slides 6-10. Enrique Iglesias’ “Tonight (I’m Lovin’ You)” featuring Ludacris and DJ Frank E falls 7-9.

Other songs to keep your eye on include Foo Fighters’ “Rope,” which debuts at No. 1 on Billboard’s Rock Songs chart and No. 70 on the Billboard Hot 100.