The Weeknd is the alias of Abel Tesfaye, an enigma turned superstar whose accounts of emotionally and physically toxic indulgences are related through morose alternative R&B ballads and fluorescent electro-pop throwbacks alike. The singer and songwriter rose out of Toronto in 2011 with three mixtapes that seemed to have no designs on mainstream appeal. Within only a few years, however, Tesfaye had scored a variety of Top Ten pop hits that made his aching tenor known on a global level. These included a duet with Ariana Grande ("Love Me Harder"), a dramatic ballad from the sound...