This one came out a couple of years ago. Boyce Avenue and "X Factor USA" girl group Fifth Harmony, have taken on Bruno Mars' ballad "When I was your Man" and sing it mostly a capella with a little help from Boyce's electric guitar.

The song is off of Mars's second album, Unorthodox Jukebox, which was released back in 2012. The album earned Mars a Grammy for Best Pop Vocal Album at the 56th Annual Grammy Awards.

 

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