Complex sentence: When Zappa asked for a re-assignment of his contract from DiscReet to Warner in order to advance the possibility of being able to do special projects without Cohen's involvement, Warners briefly agreed, which led to the 1976 release of "Zoot Allures" on Warner.
Split into simpler sentences: When Zappa asked for a re-assignment of his contract from DiscReet to Warner in order to advance the possibility of doing special projects without Cohen's involvement, Warner agreed. This led to the 1976 release of "Zoot Allures" on Warner.