Complex sentence: Petri Ilari Walli (February 25,1969--June 28,1995) was the founder, vocalist, guitar-player, songwriter and producer of the Finnish psychedelic rock-band Kingston Wall.
Split into simpler sentences: Petri Ilari Walli (February 25,1969--June 28,1995) was a Finnish guitar-player, vocalist and songwriter. He was the founder, vocalist, guitar-player, songwriter and producer of the Finnish psychedelic rock band Kingston Wall.