Angine de Poitrine are the most thrilling Canadian mystery since David Cronenberg’s The Shrouds . Though the anonymous Québécois duo had been gigging quietly around the Great White North for years, a single KEXP session last December at France’s Rennes Festival rapidly made them viral superstars. In bobbing paper-mâché masks and monochromatic wardrobes, these two “space-time voyagers”—known only as Klek de Poitrine and Khn de Poitrine—make weirdly danceable math-rock for muffled drums and comically fretted microtonal guitar. Self-described as a “Mantra-Rock Dada Pythagorean-Cubist Orchestra,” they’ve managed to rack up better view counts than the Tiny Desk Concerts from Clipse and Weezer. A copy of their debut, 2024’s Vol. I , has already sold for more than $1,500 on Discogs. YouTube commentator Rick Beato addressed the sensation in a video called “ Please STOP Sending Me This .” Dates on their first U.S. and Europe tour are selling out in minutes.…