People like to dance. This is a simple coda and one that permeates all facets of music, from Hip Hop to Pop to Rock. Knowing this, it should come as no surprise that Indie Rock, a musical tradition known primarily for shoegazing and head bobbing, would soon follow suit. Granted, there are a lot more black-rimmed glasses and cowboy shirts, but the idea remains the same — people can’t wait to hit the dancefloor and get their groove on. Enter Passion Pit, the next in the line of Indie Rock party starters with synth-heavy grooves, crazy live shows and that one certain something to eschew them from the mainstream. They play the Northside Tavern at 8 p.m.