Photo by Erez Avissar

DJ Windows 98, aka Arcade Fire's Win Butler, performed at the second of Pitchfork's SXSW parties at House of Vans at the Mohawk on March 19. Below, watch a video from his set.

Wednesday's party featured Speedy Ortiz (featuring Hannibal Buress!), Courtney Barnett, Rae Sremmurd, Sophie, A. G. Cook, Viet Cong, Shamir, Son Lux, Natalie Prass, Lydia Ainsworth, Torres, and Steve Gunn.

In addition to Butler, Thursday's lineup included Arcade Fire's Will Butler, Twerps, Vince Staples, Waxahatchee, Migos, Hundred Waters, Title Fight, Alvvays, Untold, Makthaverskan, and Bully. Stay tuned for more video. Check out photos from the parties here.