Multiple Artists: Correct tagging

Hey all. Didn’t find any specific topic about it (at least with the keywords I was using) so here’s my question:

I’m tagging some of my mp3s, but some albuns have multiple composers, sometimes three or more to a song.
How should I tag this files? One of these cases is the album World of Warcraft: Cataclysm Soundtrack (http://vgmdb.net/album/20763)
Some tracks have two or more composers.. I used to tag this files according to the most commonly used artists on last.fm, but is there a right way to do this, some rule of thumb?

Thanks in advance.

if tagging with semicolon (ex hans zimmer; john powell instead of hans zimmer, john powell), this usually making player/library program recognize correct that there are two artist.

Personally, after the track name I put the name of the artists in parentheses. Where it asks for composer and contributuing artists I often put various artists. However, if the album only gives composer names, but not who did what track, will add composers such as: Hans Dimmer, Bob & Judy. Seems to work Out either way. I do not believe there is any one "corect" way, and it is a personal preference, at least as far as personal preferences are concerned. As far as what official credits go, dunno?

Yeah, personal preference methinks. Usually I go for the Person1, Person2 & Person3 approach.

It is really down to personal preference… I wasn’t able to find a solid ruleset for tagging tracks properly (believed me, I tried looking). So often nowatimes I’ll have the main artist as the artist, then additional artists, vocalists or others in the title in parentheses as Amanda does it.

If I’m not mistaken one of the tag fields has a spot for album artist or arranger, so maybe you could try utilizing that as well?

Thanks all for the imputs. Guess I was more worried about correct tags for my last.fm scrobbles, i thought there was some guidelines to that.
I use commas to separate artists, and usualy do not fill most of the fields that could hold some of that info. I’m about to change that.