What is that?

knuckles' chaotix for 32X

i don't see why not!

I've also always been impressed with the Ninja Gaiden II sound test. Nothing as fancy as a keyboard display, but they took the time to put in 3 different sound tests, each one slightly better than the last, depending on how "well" or how far you go with the button combo. It does have a volume display for each channel, which is cool.

Holding left + up + A + B + Select, then hitting start at the title screen gets you the first sound test seen in this video (no track names, no sfx, etc). Not shown in the video is the second one, where you hit start during the intro to prompt the title screen, holding down all the buttons, let it fade back to the cutscene, and then hitting start again twice. I believe that gets you sfx and a different image. Finally, what you see in the latter portion of the video is doing the same but letting the title screen fade away twice before you do it and prompting the title screen for the 3rd time.

Here's the 2nd best sound test screen ever-

that is pretty badass, these were the things that kept me playing the games when I was actually bored with them as a wee lad

Fix'd.