"Waking Up in Vegas"@en . "\"Waking Up in Vegas\" is a song by American singer Katy Perry, taken as the fourth and final single from her second studio album, One of the Boys (2008). Perry wrote the song with Desmond Child and Andreas Carlsson, while production was done by Perry and Greg Wells, who is also credited for playing all the instruments on the song. It was officially released to US radio stations on April 21, 2009 (2009-04-21)."@en . . . . . "2009-04-07Z"^^ . . "199.0"^^ . . . . . . . . . . .