Six people were taken to hospital after Angine de Poitrine’s huge free show at Montreal Jazz Festival.

The anonymous duo – who also hail from Quebec – played the festival’s TD Stage at Place des Festivals on Saturday night (June 27), drawing one of the biggest crowds in the event’s recent history, with officials saying they had not seen a turnout of that size since Stevie Wonder’s appearance in 2009.

According to Urgences-santé, paramedics assessed 10 people during the event, with six later being transported to hospital and four others refusing transport after being seen by medical teams.

Benjamin Dansereau-Leclerc, head of operations at Urgences-santé, said the calls included falls, traumatic injuries and cases of intoxication. Some of those taken to hospital were described as being in a serious condition, but paramedics said they did not fear for anyone’s life.

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Angine De Poitrine au Festival De Jazz De Montréal ce soir.

Les gars jouait devant 14 personnes il y a quelque mois. Check le monde qu’il y as la!

En plus d’être devenu millionnaires avec la sortie de leur CD et vinyle.

Vidéo – Jean Brosseau (Facebook) pic.twitter.com/JSGjnVPrvl

— 𝕊𝕖𝕓 𝔹-𝕃𝕒𝕧𝕠𝕚𝕖 (𝕋𝕒/𝕐𝕖𝕦𝕝)⚜ (@SebBoucht) June 28, 2026

He added that while responding to a number of incidents at once required coordination, the situation was not unusual for an event of that scale.

“We do that for the biggest concerts, it happens,” Dansereau-Leclerc told CTV News. “It’s not unusual but we’re prepared for that.”

Montreal Jazz Festival general manager Maurin Aux later celebrated the scale of the show on social media, writing: “A historic night at the Festival… One of the biggest crowds in our history, thanks to Angine! And an energy like we’ve rarely seen.”

Angine de Poitrine, made up of Klek de Poitrine and Khn de Poitrine, have become one of 2026’s most unlikely breakout acts. The duo perform in elaborate polka-dot costumes and papier-mâché masks, while their sound combines microtonal guitar, complex drumming, and influences ranging from prog to punk.

The duo released their second album ‘Vol. II’ in April, and they have won a number of celebrity fans, including Dave Grohl.

Earlier this month, reports emerged that a fake version of Angine de Poitrine had been performing in Russia, after the band’s art director Sam Murdock said a group had appeared in similar costumes while tagging the real band online.

“There’s a fake [version of the] band touring Russia already, with the costumes and everything,” Murdock said. “And they keep tagging the band and they don’t even say it’s not a real band. And they just have a one-neck guitar.”

Angine de Poitrine are set to return to the UK later this year, with festival appearances at End Of The Road and Manchester Psych Fest in September, followed by dates in Leeds, Glasgow, Dublin, Bristol and two nights at London’s Troxy in October. See all of the dates here and find any remaining tickets here.