“The Shacks are refurbishers of warm, fuzzy rock ‘n’ roll—music that envisions comforting, classic sensations like cascading spirals of woodsy incense. It began with the NYC-based trio’s 2016 self-titled EP; then, like so many others others before them, the Shacks took part in scoring an Apple ad, their contribution being a coy cover of Ray Davies’ 1965 hit “Strange Effect.” The group is headed by ”