Conversation so far:
when did Jan Berry die?
Jan and Dean's career together ended with Jan Berry's death on March 26, 2004
what did Jan Berry die of?
he suffered a seizure
where was Jan Berry buried?
Berry was an organ donor, and his body was cremated.
why was Jan Berry cremated?
Did they have a wake or viewing for Berry?
On April 18, 2004, a Celebration of Life was held in Berry's memory

Question: who attended the celebration of life?
Self-contained rewrite: who attended the celebration of life for Jan Berry?