Three of music's most exciting newcomers, B.o.B, Bruno Mars and Janelle Monae, teamed up for a medley of some of their biggest hits tonight at the 2011 Grammy Awards.
Jessie J asks true-to-life questions with her new single, 'Price Tag' -- an uplifting and positive diamond in the rough. The English singer-songwriter made her debut with 'Do it Like a Dude' in the UK, but 'Price Tag' is Jessie J's lead US single and first No. 1 hit (it peaked on the UK Singles Chart on Feb. 6).