Complex sentence: Haines and Millan formed their first band around 1990 while at ESA, and with songs later written and recorded while at the University of British Columbia in Vancouver in 1992--1993, at Toronto in 1995, and at Concordia University in Montreal in 1995--1996.
Split into simpler sentences: Haines and Millan formed their first band around 1990 while at ESA. Haines attended the University of British Columbia in Vancouver in 1992--1993, and the Concordia University in Montreal in 1995--1996.