Complex sentence: Active from 1991 to 2000, led by Sooyoung Park, former frontman of Bitch Magnet, and with the initial line-up including bassist Lexi Mitchell and drummer Mac McCaughan (of Superchunk).
Split into simpler sentences: Active from 1991 to 2000, it was led by Sooyoung Park, former frontman of Bitch Magnet. Seam's initial line-up included bassist Lexi Mitchell and drummer Mac McCaughan (of Superchunk).