This is going to sound weird, but last night I was going through the alphabet trying to think of an NSC artist beginning with each letter (as a method of making myself fall asleep), and this was the artist that popped into my head for X That was the first time I'd thought about that artist in years, so it's a spooky coincidence to see them here too.
I don't remember who Y was, so I think it was pretty successful.
One of the best entries ever tbhRandomly came across this Zoidiac classic earlier today.