What do you think if here we collect a list of potential future soundtracks that will be played along video replays? All the best proposed musics will be added to the "soundtracks pool" from where one of them will be randomly picked up each time a replay is composed.
When we'll have collected a few propositions, I'll open a poll to vote for the bests!
The only indispensable requirement for tracks is to be at least 180 seconds long (each second carries 1 turn of replay); of course, if the music is longer, it's better :)
After this, I think that soundtracks should be culturally and technically unrelated to any specific geographical location or epoch. For example, I'd exclude genres like tribal, celtic, computer music, orchestra, or anything with spoken voice which clearly identifies a specific language.
Then, it's up to your preference!
At the moment we have: