Complex sentence: Their first public performances were free-of-charge and spontaneous, including busking in parks, in taxis, and on the Montreal metro, and they continue to put on impromptu shows at poutineries and pizzerias.
Split into simpler sentences: Their first public performances were free-of-charge and spontaneous, including busking in parks, in taxis, and on the Montreal metro. They have continued to put on impromptu shows at poutineries and pizzerias.