NINE TRACK MINDThe title suggests our singer songwriter can't be confined to any one lane that his mind moves so fast, it doesn't run on one track but nine. Nevertheless, Charlie Puth excels at two modes on his 2016 debut: balladeer and song and dance man. If the latter doesn't surface as often as the former, it nevertheless rules the roost on Nine Track Mind because in the bottom of his heart, Puth is a music theater kid chomping at the bit to put on a snazzy show.