The very-big-deal groove-based art/music/dance extravaganza Gem & Jam kicks off on Friday providing three nights (and by nights, we mean well into the morning with their after-hours events) of fun for most of the senses. We have four pair of single night tickets to give away to lucky Tucson Weekly readers. Just head over to our contest page, let us know what night you'd like to go (the schedule is below the cut, so you can look for your favorite band or just pick a night and be surprised). We'll pick winners Wednesday at 5 pm and let them know via email.

For more info on the fest or to buy tickets, go to gemandjamfestival.com.

Good luck!

Friday, Feb. 7: Outside: Buddha Base (5 p.m.), Endoplasmic (5:40 p.m.), Marvel Years (6:40 p.m.), Desert Dwellers (7:50 p.m.), Supervision (9 p.m.), Paul Basic (10:10 p.m.), Purity Ring (DJ set) (11:20 p.m.), The Motet (12:30 a.m.).

Friday, Feb. 7: Inside: Johnny Swoope (5 p.m.), Bogl (6 p.m.), Macrodot (7:10 p.m.), Krooked Drivers (6:10 p.m.), Alex Grey (entheogen talk) (9:20 p.m.), Treavor Moontribe (10:10 p.m.), Amani (11 p.m.), Digital Connection (midnight), Unlimited Aspect (1 a.m.).

Saturday, Feb. 8: Outside: The Bennu (5 p.m.), Electric Feel (5:50 p.m.), Lost Optical (6:50 p.m.), Bluetech (8 p.m.), Russ Liquid (9:10 p.m.), Thriftworks (10:20 p.m.), Eliot Lipp (11:30 p.m.), Mimosa (12:40 a.m.).

Saturday, Feb. 8: Inside: Psy Dell (5 p.m.), Adem Joel (6 p.m.), Kruza Kid (7 p.m.), Nico Luminous (6 p.m.), Smash & Grab (9:10 p.m.), NVO (10:30 p.m.), Insightful (11:50 p.m.), Flying Skulls with Abstract Rude (1 a.m.).

Sunday, Feb. 9: Outside: Buddha Bass (5 p.m.), Spafford (6 p.m.), Lynx (7 p.m.), Govinda (7:50 p.m.), Love & Light (8:50 p.m.), Random Rab (10 p.m.), Kalya Scintilla (11:15 p.m.), Boombox (12:30 a.m.).

Sunday, Feb. 9: Inside: Joshua Pocalypse (5 p.m.), Templo (6 p.m.), Sporeganic (7:10 p.m.), Mesca (8:20 p.m.), Matt Haze (9:30 p.m.), Soulular (10:40 p.m.), VNDMG (11:50 p.m.), Smokovich (1 a.m.).