Yeah the locrian is a weird mode, probably the least used. But if your looking to write something dark, that's your scale. It's a good way to end a piece also, and the key behind that is you start the chord progression with a VIIo, but end it on the I chord. Not always VIIo straight to I but maybe VIIo-IIIo-VImin-IV-I. Basically your moving down in the circle of fifths and then back up to the tonic. So the chord progression in C major is Bm7b5 - (f major)Em7b5 -Amin (maj depending on strenght)- Fmaj - Cmaj.

This is a great way to conclude a piece if you have modulated between C major and F major somewhere in the piece. A common example is the main theme in C major and maybe the bridge in F major. Concluding with both familiars in the final movement will give a greater sense of resolution.

[Edited by noticingthemistake on 09-30-2003 at 06:39 PM]