What MIDI instrument combinations sound good?

[Cringe_Gaming_64yt]

if you are doing 8 bit and need an extra instrument, you can use the  bit square and copy it then skip an octave above or below to make it sound like a trance gate, example: C4 and C6.
you can also do this with 8 bit sine/ 8 bit triangle and get a rock organ sound. doing C4, C5, C6 with 8 bit triangle or sine will give a slightly different rock organ sound