Santana Feat. Rob Thomas - SmoothMusic video by Santana Feat. Rob Thomas performing Smooth. (C) 1999 Arista Records, Inc"Smooth" genuinely appeared out of left field. Who would have thought legendary Latin guitarist Carlos Santana would record one of the biggest pop hit singles of all time? Add to that - who would have thought the vocalist would be the lead singer for post-grunge band Matchbox 20?