I've been rubbish updating this thread recently, but there has been a lot of work on the wiki in the meantime!
http://buzzwiki.robotplanet.dk/index.ph ... sic_Theory Although this page is still in progress, Xaphiod, Ags and Mute have written a long introduction to music theory based on the tracker interface which covers chords, scales, keys, and modes. If you got into music without getting theory classes, I really recommend you have a read of this, not neccesarily to use the theory, but to give you all sorts of ideas for composing! Thank you to Xaphoid for starting this off and putting so much effort into it, Ags and Mute for there contributions, and to the various other buzzers who have been putting in your 2c on how to explain this complicated subject.
http://buzzwiki.robotplanet.dk/index.php/ArguruXaphoid also has put up a link to the much missed Arguru.
http://buzzwiki.robotplanet.dk/index.ph ... your_trackJoachip has added a small clarification to this, but it's a very informative post worth taking a second look at.