Today, we’ve got a new installment of Soundcheck at Southpaw featuring the well-fed, MC5-style wailing of Brooklyn’s own Panthers, and a fresh episode of Bangs with our other hometown’s current darlings the Arcade Fire descending the stage and plopping themselves straight in the middle of the pit for an encore. There’s also your daily dose of DOs & DON’Ts & Friends and a couple new videos in the music channel courtesy of our buds at Merge.