This is definitely one of the best places to catch live music because it attracts such great talent.
By dive bar standards, it's pretty solid. The drinks are strong and the bathroom is consistently clean (really my only criteria in a dive bar). Beyond that, it's too loud and - for a music venue - the sound quality is too inconsistent. The best experience is had standing in the back or sitting on the patio with friends.
Bright side: The audience is always diverse and rich with character!