ATLANTA (AP) _ Rhythm and blues singer Usher canceled three concerts after dislocating a shoulder while rehearsing dance steps.

The 20-year-old star was placed under the care of an orthopedic surgeon after injuring himself Wednesday, spokesman Courtney Barnes said.

Usher, who lives in suburban Atlanta, had been scheduled to tour New Zealand and Australia later this month.

The singer _ whose second album, ``My Way,'' sold 5 million copies and produced two No. 1 hits, including the Grammy-nominated ``You Make Me Wanna ...'' _ will make up the tour dates once he recovers, Barnes said.