** FILE ** In a Dec. 12, 2008 file photo singers Rihanna and Chris Brown perform at Madison Square Garden in New York. Rihanna and Brown were last minute absences at the Grammy Awards Sunday Feb. 8, 2009. (AP Photo/Evan Agostini/file)
** FILE ** In a Dec. 12, 2008 file photo singers Rihanna and Chris Brown perform at Madison Square Garden in New York. Rihanna and Brown were last minute absences at the Grammy Awards Sunday Feb. 8, 2009. (AP Photo/Evan Agostini/file)