It's hard to say really, gets a bit convoluted.
Started listening to my parents' music which was mostly crap: Dad liked classical which wasn't too bad; Mum liked shit like Elton John, early Beatles, ( I still don't dig their early stuff much), Bette Midler, you know middle of the road boredom. First artist I remember getting into on my own was Michael Jackson; when Thriller blew up that shit was huge. I don't remember any kid at primary school that didn't dig it. Later in High school started off with rock like: Van Halen, Guns n Roses etc. Then to metal like Metallica, Kreator etc. I was playing saxophone at the time so also listened to Jazz like Miles as well. Hip Hop was always there but didn't grab me until later really.
I liked Public Enemy, that Run DMC ish etc but didn't spend my money on it. Remember that Tone Loc, Young MC ish? Loved that at the time. Also started getting into Death metal and Punk hardcore like: Carcass, Napalm Death, Dead Kennedys; Black Flag etc. By the end of high school started really expanding my tastes into all sorts of shit: got more into the Funk and Soul, (Funkadelic, James Brown, Isaac Hayes; Curtis Mayfield etc), before really discovered Hip Hop. Went through a phase of loving Krautrock, experimental shit, electronica, ambient, industrial etc too.
Fuck man, I've written too much. Anyway to get to the point, after high school I heard stuff like NWA, Snoop Dogg and Ice Cube that I got into and just expanded out to listening to all types of shit really. Wu-Tang was an eye-opener when that first album dropped.
These days, (many years later), I try to keep an open mind and listen to any and everything that appeals to me. I get bored listening to the same shit all the time.
Excuse my verbosity, it's a difficult question to answer honestly.