When you think of a performance of a gay men's chorus, you probably don't think of Britney Spears tunes. But maybe you should... at least when you think of the Gay Men's Chorus of Los Angeles. The group recently performed the pop star's 2013 hit "Work Bitch" at a concert in Los Angeles and it was everything (as you can see above). "Work Bitch is just one song that was part of last week's 'Vegas Baby!' concert featuring music by our favorite Vegas icons - from Elvis, Frank Sinatra, Wayne Newton, and Sammy Davis Jr.