Photos via WireImage

Usher Raymond promptly canceled his performance at Clive Davis? pre-Grammy party due to a family emergency. The emergency? Well apparently Tameka was in Brazil to get a few nip/tuck procedures and experienced severe complications during her plastic surgery. A neurosurgeon, Dr. Gabriel Hunt of LA?s Cedars-Sinai Medical Center, has also traveled to South America to tend to Tameka. Josh Groban filled in for Raymond during Davis? event and Usher’s camp has issued no comments. 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.

Grammy 2009 had no shortage of drama in that Chris Brown and Rihanna were no-shows due to a rumored domestic altercation.

Shortly after the beginning of the red carpet, TMZ reported that Brown was being investigated for ‘felony domestic assault’ of an ‘unidentified female.’? Word quickly spread that Chris Brown and Rihanna had gotten into a heated argument after leaving Clive Davis’ pre-grammy party which turned into an all out street brawl. E! Online reports:

Brown, 19, turned himself in at the Wilshire station around?6:30 p.m. and was booked on suspicion?of making criminal threats. The case will now be sent to the district attorney’s office and further charges could be filed. He was released from jail after?posting $50,000 bail.

Sources tell E! News that the alleged victim was Rihanna, 20, and that she suffered visible bruises on her face during an altercation that took place hours earlier. Both in turn balked on scheduled Grammy performances.

A spokeswoman for Brown’s label declined comment. Rihanna’s publicist, Amanda Silverman,?would only tell E! News that the 20-year-old “Disturbia” singer was involved in an unspecified traffic mishap. “Rihanna is well,” the rep said. “Thank you for concern and support.”