For his extracurricular adventures outside of The Tragically Hip, the late Gord Downie frequently turned to the Canadian indie-rock underground for inspiration, tapping the likes of Julie Doiron and The Dinner Is Ruined for his idiosyncratic, folk-oriented solo efforts. But when Downie joined forces with Toronto roots-rock outlaws The Sadies in 2014, their big-bang collision thrust both parties into the most raucous, untamed music of their careers. Live at 6 O’Clock was recorded across several summer-festival tour dates in support of their one and only album together, And the Conquering Sun, best represented here by a blistering version of the garage-battered rave-up “It Didn’t Start to Break My Heart Until This Afternoon,” which makes Downie’s wildest onstage wig-outs with the Hip seem staid by comparison. But even though Downie and The Sadies were technically in album-promo mode, they also used their limited stage time to dig deep into their record collections: Live at 6 O’Clock is teeming with corrosive covers of Neil Young and Who gems you never hear on classic-rock radio and cult favorites from Roky Erickson and The Gun Club, while also connecting the dots between what is arguably the first-ever hardcore song (The Stooges’ 1972 ripper “I Got a Right”) and the genre’s 21st-century torchbearers (Fucked Up’s skull-crushing “Generation”).