Zac Brown Band and Shawn Mendes Team for ‘Keep Me in Mind’ on ‘CMT Crossroads’ [Watch]Zac Brown Band and Shawn Mendes Team for ‘Keep Me in Mind’ on ‘CMT Crossroads’ [Watch]The pop star's romantic vocals were the perfect accent to ZBB's 2010 hit, which they performed on "CMT Crossroads." Wendy HermansonWendy Hermanson