See....You made me go back.....
Here is a post I did back in 2003.
http://www.learngospelmusic.com/forums/index.php/topic,177.0.htmlThe thing I love most about quartal chords is that you can play
almost any one with any bass and still have a good sound. I use it as a substitution for a major chord or as an extension of a major or minor chord. In the latter variation, when combined with the left hand chord, it forms more complex chords.
Major Substitution Example:
C \ D-G-C
C \ C-F-Bb
Notice that the quartal chord either starts or ends on C. The first chord forms an C2 the second chord forms a Csus7.
Root Extension:
C-E \ F-Bb-Eb
C-E \ A-D-G (C 6/9)
C-E \ Ab-Db-Gb
C-E \ Bb-Eb-Ab
Basically, to keep it short, I can use any quartal chord over a bass chord. Most of the time, it's as a passing chord to something else.