Gwyneth Paltrow shows off secret voice as sings backstage with Holly Williams

Gwyneth Paltrow shows off her secret voice as sings backstage with country star Holly Williams and her husband, musician Chris Coleman at the Grand Ole Opry in Nashville.The actress was one of the special guests who attended the 100th anniversary of the iconic venue, and was invited on stage by the couple to sing Holly's 2013 hit Drinkin'.