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
who attended the celebration of life for Jan Berry?
Attendees included Torrence, Lou Adler, Jill Gibson, and Nancy Sinatra, along with many family members, friends, and musicians
how did Dean react after the death of Jan Berry?

Question: did he release any songs that Jan had written or sung before death?
Self-contained rewrite: did Dean release any songs that Jan had written or sung before death?