Conversation so far:
What is the name of a project that David Marks worked on in his Post-Beach Boys career?
After David Marks left the Beach Boys, the Marksmen became his full-time focus, becoming one of the first acts to be signed to Herb Alpert's A&M Records in 1964.
What year did David Marks release the album The Moon?
1969
How did the public respond to the album The Moon by The Moon?
What is the name of a song from the album The Moon by The Moon?
Did David Marks find success in his post-Beach Boys career?
After David Marks left the Beach Boys, the Marksmen became his full-time focus, becoming one of the first acts to be signed to Herb Alpert's A&M Records in 1964.

Question: What made Marks leave the Beach Boys?
Self-contained rewrite: What made David Marks leave the Beach Boys?