10pm Bass Drive Wednesdays @ Le Belmont, 4483 Saint-Laurent Blvd. Join Belmont’s resident Wednesday night DJs Vilify and Construct for urban electronic, dubstep, drum n’ bass, ragga jungle and more. Free cover before 11pm, 5$ after. Until 3am.

8:30pm Hope for Uganda Benefit Concert @ Il Motore, 179 Jean Talon Ouest. Benefit concert in supporting a community organization in Gulu, Uganda in coordination with Concordia’s Volunteer Abroad Program. Performances by Massimo Borsellino, Sant’Ange, the Glassbeat & Coco Melies. $8.

8pm Uh Huh Her + Diamonds Under Fire @ Le National, 1220 rue Ste-Catherine Est. Indie rock/electropop group Uh Huh Her play National in support of their upcoming record, Nocturne. With LA’s Diamonds Under Fire. $20.

6pm Tame Impala @ Café Campus, 57 Prince Arthur Est. Australian psychedelic rock band Tame Impala (pictured) play Café Campus in support of their new record, Innerspeaker (pictured) out May 21. $18

7pm Ben Katchor’s THE CARDBOARD VALISE Book Launch @ Drawn and Quarterly, 211 Bernard O. Ben Katchor“The creator of the last great American comic strip.”—Michael Chabon) launches his first book in more than ten years. The Cardboard Valise is a graphic novel as travelogue; a canvas of semi-surrealism; and a poetic, whimsical, beguiling work of dazzling imagination. Ben Katchor will be reading and projecting images from The Cardboard Valise, which will be followed by a Q&A session.

9pm Seratone Spring Party @ Serotone Studio, 424 Aqueduc – H3C 1Z6. Griffintown recording studio Seratone throws a Spring Party featuring live music from Le Trouble, as well as the studio’s resident band Hypocrites playing some of their new songs. Drink specials. $5.

8am Beast of the East 2011 @ Arena St-Louis, 5633 rue Saint-Dominique. It’s that time of year, derby fans – the birth of a new season of hard-hitting derby! For a fourth consecutive year, the Montreal Roller Derby League hosts the Beast of the East flat-track roller derby tournament. The two-day event features teams from all over Eastern Canada, with a total of 28 20-minute games played at Arena Saint-Louis in the Mile End. This fun and fast-paced tournament will likely be the only time for you to see so many games play in a weekend. Find game schedule and ticket info here. Tickets $15 per day, $25 for two-day pass. Until 6pm.