Complex sentence: He is also known for his numerous solo works and soundtrack contributions since 1991, in addition to being the founder and frontman for Temple of the Dog, the one-off tribute band dedicated to his former roommate, Andrew Wood.
Split into simpler sentences: He is also known for his numerous solo works and soundtrack contributions since 1991. He was the founder and frontman for Temple of the Dog, the one-off tribute band dedicated to his former roommate, Andrew Wood.