After completing the promotional run for their last album, 2017’s Hug of Thunder , Broken Social Scene locked into a years-long nostalgia circuit. The Toronto collective celebrated the 20th anniversary of You Forgot It in People with an extended tour , a Record Store Day reissue, a collection of covers by the younger generation they influenced, a graphic novel reimagining the LP, and a live album recorded in 2003; then came a broader compilation of B-sides and rarities , and a full-blown documentary about the band’s early years. Despite saturating themselves in the past, Broken Social Scene never bothered with the pervasive question that can plague artists in the aftermath of triumph: How do we recapture that sound and success? Instead, they cobbled together a studio in the pastoral village of Warkworth, Ontario, whose local goods—honored with dedicated festivals: maple syrup, lilacs, the “ perfect pie ”—sound like the ingredients that comprise the band.…