Peter Gene Hernandez (born October 8, 1985), better known by his stage name Bruno Mars, is an American singer-songwriter and music producer. He is 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, as well as his own international number-one single "Just the Way You Are". He also co-wrote the international hits "Right Round" by Flo Rida featuring Kesha, "Wavin' Flag" by K'naan, and "Fuck You!" by Cee Lo Green. On October 4, 2010, he released his debut album, Doo-Wops & Hooligans. "Grenade" is a song performed by American singer-songwriter and producer Bruno Mars from his debut studio album, Doo-Wops & Hooligans. Initially released as a promotional single on September 28, 2010, it was later announced to be the album's second single. The first track from the album, it was produced by Mars along with his production team The Smeezingtons. Critical reception has been mostly positive, with reviewers praising the vocals and emotional lyrics of the heartbreak song. It has peaked at number thirty on the Billboard Hot 100, and within the top thirty in three other countries. A music.