Can't choose which part is more important...

[Bespinben]

Woah, didn't expect to see so many replies.
The Ossia sounds like a good idea, the third part is pretty short so it would work great.
uuuhm this isn't the best quality music but it'll do.
http://www.youtube.com/watch?v=eM6W_NEuEKo
A lot of non-sense going on on how they put it all together. Skip to 1:50, there's the triple threat.
Here's my arrangement
Oh yeah, I almost forgot about that! I'll upload it here soon.

The solution is through interplay between the hands the voice several parts. Below, separate layers are used to signify different parts, while cross-staff notation is employed to signify when a hand is to help with a part. Leaving playability issues up to the performer isn't acceptable - the performer is responsible for interpretation.

[N64/Dreamcast] Rayman 2: The Great Escape
--------------------------------------------------------------------------------------------------------------------------------------
"Sanctuary of Water and Ice":
[MUS] [MIDI] [PDF]

[Ragster]

Wow, and it looks to be playable. That's great, thanks!