Handwritten (Revisited)

Shawn Mendes’ ascent to teen idoldom began when he posted a six-second Justin Bieber cover to Vine, and gained steam when the peppy yet heartbroken “Stitches” earned pop fans’ adoration. His debut shows off his prodigious songwriting ability, with anthems like the storming “Something Big” contrasting with more emotionally open tracks like the sparse “Life of the Party.” This expanded edition turns up the heat with live performances and a cameo by Fifth Harmony’s Camila Cabello, who gives the guilt-tripped “I Know What You Did Last Summer” extra bite.