My taste hasnt changed a lot for the last ten years. (since I was 17 yo)
However from child hood let's say 6 years old to ten years ago(17 yo) it has changed quite a bit, but I think this is natural.
However they havent totally changed. While I dropped liking certain styles of music , I have retained liking other styles.
For example. As a kid I used to like 'volksmusik ' Mostly the bavarian type of music with lots of trumpets and other brass instruments and trivial lyrics, I stopped liking it when I was 10 to 12 years old.
However as a kid I used to like 1980s synth or new wave already, and I still like it today.
Thats not the only style I like though.
My main influences have been my father (he liked queen, Dire straits CCR, etc)My brother(he drew his influence from his guitar teacher for some part I think and passed it on to me
) I was introduced to the great blues guitarrist and Guitar virtuosos like Eric Clapton, Steve Vai, Gary Moore, Joe Satriani and others. Also I was introduced to other bands of great (again from part of my father's record collection that was in part turned over to us when my parents split up) Led Zeppelin, Pink Floyd, and the like.
I rediscovered the 80s as well with some pop and new wave bands, from which I only knew the one or other song, but I discovered that I actually liked most their stuff, and that they were from a similar time (such as Blondie, OMD, Duran Duran, Ultravox.)
Also I was influenced by radio-- We have radiostations on fm that play music from the years 1960 to 1989. Also My mother remarried to an older person, and he brought in all the 1960s music as this was his era of music. (when he was a teenager in the 'star club' in Hamburg when the Beatles started out.)
Finally I I turned to contemporary music again-- which came by the help of british radio that I was listening to introducing me to the great British Indie music of the early 2000s to 2010s. which in retrospect got me back to britpop ofthe 1990s and the Indie or early independent of the 1980s(The Smiths) (paul Weller and his bands)