I was a fan of 2pm, so I watched their idol show, and then the episode with Kara came up. Hara definately caught my eye, like WOAH. so I looked them up, I found "Break It", but didn't see Hara in it. Then I figured out that they both joined later on, so I started following Kara and looking up all of their songs.
Strangely addicting, and I never hated a single song.