NEW YORK (Billboard) - Katy Perry's "California Gurls" led Billboard's Hot 100 singles chart for a second week Thursday, buoyed by strong radio airplay and download sales.
Usher remained at No. 2 with "OMG," while B.o.B's "Airplanes" held at No. 3. Travie McCoy's "Billionaire" rose one to No. 4, swapping places with Ke$ha's "Your Love Is My Drug." Lady Gaga's "Alejandro" was up one to No. 6, trading spots with Taio Cruz's "Break Your Heart."
Eminem's former chart-topper "Not Afraid" rebounded three to No. 8 ahead of the June 21 release of his album "Recovery." The Black Eyed Peas' "Rock That Body" held at No. 9 and Drake's "Find Your Love" jumped three to No. 10, the third top-10 hit for the Canadian rapper, whose debut album is expected to open at No. 1 on the Billboard 200 next week.
Justin Bieber and Jaden Smith, star of the nation's No. 1 box office film "The Karate Kid," teamed up on the chart's top debut, "Never Say Never," at No. 33.
While some may ultimately remember the constant blaring of the vuvuzelas as the soundtrack of the 2010 FIFA World Cup in South Africa, a pair of songs emanating from the football tournament also made some chart noise. The competition's official song, "Waka Waka (This Time For Africa)" by Shakira featuring South African group Freshlyground debuted at No. 44. K'Naan's "Wavin' Flag" re-entered at No. 90.
A day after her album "Bionic" debuted with poor sales at No. 3, Christina Aguilera came in at No. 66 on the Hot 100 with the title track, while re-entering at No. 75 and No. 99 with "Not Myself Tonight" and "WooHoo," respectively. She performed the three tracks medley-style on the MTV Movie Awards Sunday.