What the title implies...Was curious, and you can never have enough music discussion. ;D 

So, has either of these two situations happened to you? 
A. You listen to a song for the first time and dislike/hate it but after repeated listens you actually end up liking/loving the song.
B. Music you used to listen to and enjoy, but for some reason or another, can no longer stand it/hate the song.

Both have happened to me, and I'll provide examples. :P

Well the band that did this to me the most often, throughout my life was Linkin Park.

[url=https://www.youtube.com/watch?v=wWBp-nlGX1o]By myself[/url] Hated this song as a kid, because I didn't like the screaming on it/backing track to it. (Yep, was one of those people.) Now I find it alright, still is probably one of the weaker tracks to be fair. 

[url=https://www.youtube.com/watch?v=znSCwbG8_L8]Bleed it out[/url] I fucking loathed this song the first few listens, but not really sure why. This one I've 180'd on.

[url=https://www.youtube.com/watch?v=M4KSZQYmuMQ&list=PLBiPNxqFKPZIJ1VW6Xc_qa0Zqe9Exn8W4] Linkin park - Thousand suns (in general really)[/url] Hated all of it when I first heard it, didn't help that my older brother jumped on the, "they matured from screaming and are making better smarter music now." (Yep, pop music is the smartest genre and don't you forget it...*drools* People saying that outgrew a whole genre, is something that drives me nuts. *side rant over*) Then I gave it a second chance and just hated the first half. And now even though I acknowledge all of it's problems and it actually has the dumbest lines they ever recorded. I like the album as a whole now.

I have more examples, of music that took a few listens to like. However, I don't have many songs I used to like that I hate. (I'd argue my taste in music has only gotten dumber with age/maturity, because I care way less about high lyrical quality.) But one song I liked a lot as a kid, but I really don't like it anymore. (and not really sure why.)
[url=https://www.youtube.com/watch?v=_8czkKRGPVQ]Sheryl Crow-Soak Up The Sun[/url]

So how about all of you? (Hopefully someone else has this problem. XD)