Complex sentence: Seymour moved back to Tulsa to undergo treatment for the cancer and continued to record and play live locally, albeit at a much diminished pace, until his death on August 17,1993 at the Tarzana Medical Centre in Los Angeles at the age of 41.
Split into simpler sentences: Seymour moved back to Tulsa to undergo treatment for the cancer and continued to record and play live locally, albeit at a much diminished pace, until his death. Seymour died on August 17,1993 at the Tarzana Medical Centre in Los Angeles at the age of 41.