I only remember finding three of them. I don't know how I came to like the other ones (most of them are probably because they're ones that my parents like and listen to a lot).
Taylor Swift: A few years ago, when we had Disney Channel, her music video for Love Story came on. Before I saw that, I didn't really like her. But then I saw the music video, and I was all like, "Alright. I like her a little bit now". After that, the rest is kind of blurry.
But one thing I do know is that I grew to love almost all her songs. ^_^
Selena Gomez: I watched Wizards of Waverly Place a lot, and it was one of my favorite shows. I always liked Selena ever since I saw it. Then, she started making her own songs, and Disney Channel would show the music videos for it during commercials. Like with most songs, it took a little while to like it, but I do like them.
Katy Perry: Okay. So, like with Taylor Swift, I didn' t really like her. I had heard other people say she was the one who sang Firework, but I didn' t see the real interest in that. But then, one day, on Tumblr, someone had posted the YouTube video of the AMV of Avatar:The Last Airbender and Firework. I really liked the video, so I kept replaying it, and soon fell in love with her song.
Okay. That' s all that I can think of.