Conversation so far:
What happened in 1984?
He later joined the musical group World Class Wreckin' Cru under the independent Kru-Cut Records in 1984.
Did they record any singles or albums?
"Surgery".
Did it have any hit singles?
"Surgery.
What happened in 1985?
After brief attendance at a radio broadcasting school, he relocated to the residence of his father and residence of his grandparents before returning to his mother's house.
Did World Class Wreckin' Cru ever go on tour?
CANNOTANSWER.
Why did he relocate?
He later dropped out of Chester to focus on performing at the Eve's After Dark nightclub.
Where else did he perform?
Dr.
Dre and DJ Yella also performed mixes for local radio station KDAY.
What happened to the band are they still together today?
CANNOTANSWER.

Question: Is there anything else you can tell me about this period of time in his career?
Self-contained rewrite: In addition to joining the musical group World Class Wreckin' Cru under the independent Kru-Cut Records in 1984, is there anything else you can tell me about Dr. Dre's career in 1984-1985?