Complex sentence: Together (with other session musicians) we released in the USA through UK Records in the early 70's in the name of "Sparky", Kip had moved to California, something he'd always said he wanted to do.
Split into simpler sentences: Together (with other session musicians) they released in the USA, through UK Records in the early 70's, under the name of "Sparky". By now Kip had moved to California, something he'd always wanted to do.