Judging from their affinity for psychedelic pop/rock (with some improv elements thrown in as well), the Boston quartet Abunai! are major admirers of Syd Barrett-era Pink Floyd. The band originally formed during the mid-'90s, when Dan Parmenter (bass), Brendan Quinn (guitar), and Joe Turner (drums) got together to jam -- all of whom had previously logged time with other local groups. Shortly thereafter, multi-instrumentalist Kris Thompson (organ, synthesizer, theremin) signed on, rounding out Abunai! to a four-piece. Signed to the indie label Camera Oscura, the quartet issued a...