They became huge hits in the 80s using the cutting edge sound of techno pop.
It was the biggest-selling single released by MO.
It was ranked 2nd on the Oricon weekly charts. It was written as a last song to surprise fans and the public before the band disbanded. The lyrics for Y were written by Takashi Matsumoto, and the keyword "heart-pounding" was used as the catchphrase for the commercial.
