Conversation so far:
What year did Garth Hudson start with the Band?
In August 1965
What year did Garth Hudson leave the band?
The Band released one more album after the Last Waltz, Islands, and then dissolved
Why did Garth Hudson leave The band after they released one more album after the last waltz called Islands?
What albums by the band  was Garth Hudson on?
Garth Hudson was in all of the band's ten studio albums

Question: What year did Rock of Ages come out?
Self-contained rewrite: What year did Rock of Agesby the band come out?