PHOTO PROVIDED Personal Effects. One of Rochester’s gutsier and more exploratory outfits on the scene today is Margaret Explosion, a delicate free-form jazz group that takes its listeners on an almost narcotic journey. The music is dreamy and tactile; you can take a hit and hold it. Because the sound is created in the moment, no one song is ever given the same treatment twice. It’s beautiful and mesmerizing. But to fully appreciate the trippy transcendence of Margaret Explosion, you have to pause and give a listen to Personal Effects, the band’s predecessor. The similarities are there, but they’re fleeting. Whereas Margaret Explosion is rather unconventional, Personal Effects was a more straight-ahead outfit operating in an emergent, danceable era of music that embraced pop and new wave. You can hear these aesthetics in Personal Effec