Usher performs live on stage at the 2012 Grammy Nominations Concert in Los Angeles, California.
LL Cool J arrives at the 2012 Grammy Nominations Concert Live at the Nokia Theater in Los Angeles.
Melanie Fiona arrives at the 2012 Grammy Nominations Live Concert in Los Angeles California.
Taraji P. Henson arrives at the 2012 Grammy Nominations Concert Live at the Nokia Theater in Los Angeles.
Common arrives at the 2012 Grammy Nominations Concert Live at the Nokia Theater in Los Angeles.
Nicki Minaj announces a nominee on stage during the 2012 Grammy Nominations Concert Live at the Nokia Theater in Los Angeles.
Usher, Valerie Simpson, and Mike Stoller perform on stage during a tribute to Nick Ashford at the 2012 Grammy Nominations Concert Live in Los Angeles.
Ludacris performs on stage with Jason Aldean at the 2012 Grammy Nominations Concert Live at the Nokia Theater in Los Angeles.
Bruno Mars announces nominees on stage during the 2012 Grammy Nominations Concert Live at the Nokia Theater in Los Angeles.
Rihanna performs on screen via live feed from the O2 Arena in London.
