Brooklyn-based guitarist/composer Jon Lundblom and his quintet Big Five Chord play the kind of forward-thinking, boundary-stretching jazz that still manages to sit well on more mainstream ears. Accomplish Jazz (Hot Cup Records), the band’s third album, runs the gamut from contemplative drones to noisy blasts, often within the same tune. Unlike pure free jazz, Lundbom and company start with defined, mostly swing-based grooves and well-wrought melodies, then let the music and mood take them down highly exploratory avenues, which split off into side streets and occasional cul-de-sacs.

Eric Snider is the dean of Bay area music critics. He started in the early 1980s as one of the founding members of Music magazine, a free bi-monthly. He was the pop music critic for the then-St. Petersburg...