Peter Hernandez Jr. (born October 8, 1986[citation needed]), better known by his stage name Bruno Mars, is an American singer-songwriter and music producer. He is well known for lending his vocals and co-writing the hooks for the songs "Nothin' on You" by B.o.B, and "Billionaire" by Travie McCoy. He also co-wrote the international hits "Right Round" by Flo Rida and "Wavin' Flag" by K'naan.