When Mega Man 2 was released in Japan in 1988 (known there as Rockman 2), Capcom was just beginning to make the transition to recognizing video game designers for their contributions. Consequently, the music composers for Mega Man 2 are strangely identified as Ogeretsu Kun, Manami Ietel, and Yuukichan's Papa—three pseudonyms. In reality, the composers are Takashi Tateishi, Manami Matsumae, and Yoshihiro Sakaguchi, respectively.

That Mega Man 2 features some of the best 8-bit video game music ever is common knowledge. This is particularly impressive when you consider that it was created relatively early in the NES life cycle and didn't bother with any special sound chips to expand the hardware's capabilities. Rather than elaborate any further, I'll let the music speak for itself: