Mega Man 7 is made by Capcom, who likes to have some fun with their games sometimes. Take Mega Man 7, for example. It's pretty standard as far as Mega Man games go. But for a little treat, move your cursor over Shade Man's stage

hold down the B button and press Start.

You'll probably notice something different right away (though the difference doesn't show up in screen shots)

The tune for the stage intro and the stage itself change to something a bit different than the norm.

And if you don't recognize the music, I'd suggest you go back and play this game for a few minutes.