Complex sentence: Both Golden & Scher worked out the arrangements together, and Golden sang background vocals on the records with Warp 9; her guide lead vocals on the tracks were replaced by Warp 9 members on the final recordings.
Split into simpler sentences: Both Golden & Scher worked out the arrangements together, and Golden supplied the background vocals on Warp 9 recordings along with the group's vocals. Golden's guide lead vocals were replaced by Warp 9 members on the final recordings.