When you’re an internationally-successful musical act that bends and shapes a genre as complex and intricate as psytrance, how do you keep your work from becoming stagnant, in this ever-shifting world of electronic music with its seemingly endless count of subgenres? You’ve got a lot of competition in the field as 2011 draws to a close. There are the arena-filling behemoths like Tiësto and deadmau5, whose light and projection show rivals that of a second-world country’s first celebration of independence. There are the up-and-coming acts, who manage to pack a dancefloor with just a simple mixer and/or MIDI pad and a laptop chock full of cutting edge software and samples. To break the mold of the constant onslaught of knob twiddlers and fader pushers, it becomes necessary to add a human element and violently active energy to your stage show. It therefore should come as no surprise that Israeli psytrance heavyweights Infected Mushroom decided to move out from behind the keyboards and up to the front of the stage a few years back, and their November appearance at the Fillmore proved that their dynamite performance energy hasn’t dwindled in the slightest — if anything, it’s gotten even wilder than before.