Conversation so far:
When did spencer leave?
On April 2, 2015, Smith announced that he had officially left the band.
Why did he leave?
CANNOTANSWER.
what did he after he left?
On April 20, 2015, Urie released "Hallelujah" as a single without any previous formal announcements.

Question: did hallelulah win any awards?
Self-contained rewrite: did hallelulah win any music awards?