I didn't seriously get interested in music until I turned 14 and became a freshmen in High School. I started out with the music taste of your average 14 year old(Nirvana, Slayer, AC/DC, Guns n' Roses, Queen, Kiss and Metallica etc)
10th grade I got started getting into softer(Mostly British) music. Beatles were the big one, I ended up buying Sgt Peppers Lonely Heats Club and their 27 #1 hits album. I also got into The Who and The Rolling Stones. By then I started looking down on metal acts like Slayer and Metallica and prefered pop music a bit more.
11th grade I started getting into J-pop and orchestra stuff(Mostly Miyazaki film soundtracks) I started getting more into older Punk and New Wave music.
Senior year it was still the same but just got into more and more Punk/New Wave groups.
Now? Still the same, found those music genre's to suit me well. Still enjoy pop music and J-pop very much as well.
blehhhh, my taste is pretty scattered.