http://www.webalice.it/amartignano/shinedemoKorgM50.mp3
It is done with a single combination.
For the pad I used a layer of three presets sounds, plus the "bells" taken using only OSC2 from the daydream piano program.
The "effects" and the lead were programmed from init programs using analog waveform samples (aka using the M50 as a virtual analog subtractive synth).
I think it sounds quite good, although a lot improveable

Andrew