Complex sentence: Between December 1987 and January 1998 McLennan and Forster began a intense songwriting process demoed all the songs in advance and then presented them to the producer and their band mates, leaving less room for improvisation.
Split into simpler sentences: Between December 1987 and January 1998 McLennan and Forster began a intense songwriting process. They demoed all the songs in advance and then presented them to the producer and their band mates, leaving less room for improvisation.