Complex sentence: Dédé Fortin (as well as other members like Serge Robert, later to be known as Mononc' Serge) was a passionate Quebec sovereigntist and brought the band to play an important role in the 1995 Quebec referendum via partisan shows.
Split into simpler sentences: Dédé Fortin (as well as other members such as Serge Robert, later to be known as Mononc' Serge) was a passionate Quebec sovereigntist. The band played an important role in the 1995 Quebec referendum via partisan shows.