Complex sentence: From the start, drummer Mike Mangini was wholly integrated in the creative process, unlike for "A Dramatic Turn of Events", where Petrucci programmed the main drum parts during writing and Mangini recorded his own interpretations of them later.
Split into simpler sentences: From the start, drummer Mike Mangini was wholly integrated in the creative process. For "A Dramatic Turn of Events", Petrucci programmed the main drum parts during writing and Mangini recorded his own interpretations of them later.