Anything from This System (link inside)

[Draconiator]

Talk about obscure, this system doesn't even exist on GameFAQs!  and I doubt you've ever heard of it before...they have the actual games running in an applet, so you're good with finding music if you can figure out the controls.

https://archive.org/details/megaduck_library

[The Damned]

Controls are as follows:

Arrow keys = D-pad, Alt is left button, Ctrl is right button, 1 is start/pause. "p" also pauses the emulator itself.

[Draconiator]

As for me, I think the Pile Wonder title screen could be translated into some good uplifting trance.  the source is pretty messed up near the end of the loop though...I may need to figure out a way to convert that bit.