Conversation so far:
What is the death of Carl for the Beach Boys?
In early 1997, Carl Wilson was diagnosed with lung and brain cancer after years of heavy smoking.
Did Carl Wilson receive treatment for lung and brain cancer?
Despite his terminal condition, Carl Wilson continued to perform with the Beach Boys on its 1997 summer tour while undergoing chemotherapy.
Did Carl Wilson's terminal condition affect his performance with the Beach Boys on their 1997 summer tour?
During performances, Carl Wilson sat on a stool and needed oxygen after every song.
How many shows did Carl Wilson perform on a stool and needing oxygen after every song?
What else can you tell me about the shows Carl Wilson played while doing chemotherapy besides sitting on a stool and needing oxygen after every song?
Where did Carl Wilson tour with the Beach Boys for their 1997 summer tour?
Are there any other interesting aspects about the Beach Boys article besides Carl Wilson's death?
In April 1995, it was unclear whether Brian Wilson's project would turn into a Wilson solo album, a Beach Boys album, or a combination of the two.
What was the album Brian Wilson was working on in 1995 about?

Question: Did cancer cause his death?
Self-contained rewrite: Did cancer cause Carl Wilson's death?