Complex sentence: Started in 1991 with his brother Tarquin Katis and friend Dave Schneider; though he and Tarquin are no longer in the band, The Zambonis continue to play nothing but hockey songs.
Split into simpler sentences: Started in 1991 with his brother Tarquin Katis and friend Dave Schneider. Though he and Tarquin are no longer in the band, The Zambonis continue to play nothing but hockey songs.