Conversation so far:
Did Roy perform at the Grand Ole Opry?
In 1938, the Crazy Tennesseans moved to Nashville to audition for the Grand Ole Opry.
Who are the Crazy Tennesseans?
the band's.
Did Roy perform with the Crazy Tennesseans?
On Hay and Stone's suggestion, Acuff changed the group's name to the Smoky Mountain Boys.
Who are the members of the band?
Clell Summey left the group and was replaced by the dobro player Beecher (Pete) Kirby.

Question: Are the Smokey Mountain Boys successful?
Self-contained rewrite: Are the Smokey Mountain Boys successful?