현아 (Hyun Ah) is a South Korean singer, rapper, and dancer. She is also the main rapper in the popular girl group 4minute. This is her debut EP, after releasing a popular single last year, and the title track, "Bubble Pop!" is super catchy. I like this EP a whole lot, her voice has a lot of character and the music isn't overblown and obnoxious... The track "A Bitter Day" is actually quite beautiful, and "Downtown" is really awesome. Yes, I love this.