Miranda Lambert has joined the lineup for the Grammy Nominations Concert Live event taking place Dec. 1 in Los Angeles. The concert will air live from Club Nokia on CBS. Justin Bieber, B.o.B., Bruno Mars and Katy Perry will also perform, while LL Cool J will host the one-hour event. This is the third year the Grammy nominations will be revealed live on primetime television. The Grammy Awards ceremony will be held Feb. 13 at Staples Center in Los Angeles and will air live on CBS.