Skrillex’s Full Flex Express Tour makes eight stops in Canada this month, and in advance of tonight’s show in Montreal, Sonny Moore and Wes Pentz found time to create some beats with a couple of celebrated local musicians. The above photo (via DL Jones’ Facebook) shows Jack Ü jamming in the studio with Win Butler and Régine Chassagne of Arcade Fire. On one hand this is not so weird, since Diplo and Butler (aka DJ Windows 98) have been known to shoot hoops together in between festival sets. On the other hand, Arcade Fire’s frontman has been been dismissive of EDM in the past. Either way, they are probably just having fun and not, like, recording a surprise album for Tidal. But who knows! Watch some video below.

UPDATE: More photos…

Jack Ü (Diplo + Skrillex) are in what looks to be Arcade Fire's Sonovox Studio – doing something with Win and Régine. pic.twitter.com/ovVoOocGvz

— Arcade Fire tube (@ArcadeFiretube) July 10, 2015

Skrillex and Diplo have the #1 song on Billboard’s Hot Dance/Electronic Song chart with “Where Are U Now,” featuring Justin Bieber. Check that out below.

UPDATE 2: Butler clarifies:

@ArcadeFiretube just showing a couple of friends our studio. Not a session.

— DJ Windows 98 (@DJWindows98) July 11, 2015