I'm translating an interview of two musicians. At certain moment, discussing jokes hidden in lyrics, one of the speakers says "I think there's always been a couple of jokes in my work. It's not a primarian interest". And that's where my problem lies: I can't figure the meaning of "primarian". Dictionaries doesn't help much as neither of those I looked up seem to have this adjective. Google also doesn't suggest anything that would clarify the meaning for me. I'll be grateful for any help.
"It's not a primarian interest"
He means that when he writes the lyrics for a song, his main objective is not to insert hidden jokes, although he admits he does that too.
Edit - "primarian" is not a word you can find in mainstream dictionaries, but it's been used colloquially (correctly or not) by some people to mean "primary" (of chief importance, principal) ODO