Cage the Elephant consists of a lead vocalist who also plays guitar on what bonus track?
Cage the Elephant:  The band currently consists of lead vocalist Matt Shultz, rhythm guitarist Brad Shultz, lead guitarist Nick Bockrath, guitarist and keyboardist Matthan Minster, bassist Daniel Tichenor, and drummer Jared Champion. Matt Shultz (singer):  He also plays guitar on the bonus track "Cover Me Again" from their self-titled album.
Cover Me Again