I could name quite a few albums that shaped my musical preference (at the time) but I feel like discussing the album that has probably had the most influence on my tastes in the past year:
Before I got absolutely hooked on this album I would not bother listening to mainstream artists in general. I would avoid the likes of
Lana Del Rey,
Rihanna,
Bruno Mars etc. (though I did have a
Lady Gaga phase a while back) because I assumed I couldn't possibly enjoy them as much as I the latest groovy new underground Hip Hopper on the scene. But that all changed.
Now I am far more pro-active in terms of seeking pop music that I enjoy. Sure, it's not all for me, but neither is every Avant-Garde Jazz outfit.
A side-effect of this pop obsession has been increased standards/needs from Hip Hop music (not sure why it seems to have only effected my tastes in Hip Hop though) as I am seemingly more picky.