According to sources, Usher canceled his performance at Clive Davis’ pre-Grammy party due to his wife medical crisis following a cosmetic procedure. Tameka is in Brazil and has experienced complications from plastic surgery. A neurosurgeon, Dr. Gabriel Hunt of LA’s Cedars-Sinai Medical Center, is on the way to South America. As of Sunday evening, Dr. Hunt had arrived in Brazil. Clive Davis, president of Usher's J Records label, announced that the entertainer and his mother phoned earlier to cancel his rehearsal and subsequent performance at the Beverly Hilton because of a "serious illness in the family." A rep for Usher had no comment at this time.Josh Groban filled in for the R&B star at Davis’ annual event.
Foster, a 37-year-old stylist, recently gave birth to the couple’s second child, Naviyd Ely Raymond. The couple’s first child, Usher Raymond V, was born in November 2007.

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