It's the kind of protest song you'd expect from hardened punks or political rappers — not seven high school girls in synchronized dance.

Seifuku Kojo Iinkai (SKi), which translates to "Uniform Improvement Committee" in English, have caused a bit of a stir on YouTube with its song "Da! Da! Datsugenpatsu" ("Free From Nuclear Power Plant"). On first listen, it's the usual synthesizer-based, straight-to-karaoke pop song you'd expect from any number of Japan's idol groups. Listen to the lyrics, though, and the song tells a different story: "Politicians do not work in (a case like) this, always hanging on to their honor and wealth."

It's a strong message to try and get across to the youth of Japan, but one that isn't unfamiliar in music overseas.