Blue Eleven piano piece

I was thinking about 21/16, the "blue fourth". It's kind of a dissonant interval, plus it's overshadowed by 4/3. Could it ever get used in a chord? So I came up with the blue eleven chord:
1/1 3/2 7/4 9/4 21/8
This piece, just a study really, alternates between Ab major and Ab blue eleven.
The trick seems to be keeping the tonic down low and the blue 4th up high to create a 21/4 ratio, almost as good as a 16/3.

mp3 link:
http://notonlymusic.com/board/download/file.php?id=834

streaming link:
http://notonlymusic.com/board/viewtopic.php?f=23&t=420&p=2956#p2956

Try a 16:18:21 triad, I use them all the darn time in 18-EDO. When you hear the 16:21 as a 6:7 above 8:9, it seems to sound better than if the 16:21 is played as a "bare" dyad.

-Igs

--- In tuning@yahoogroups.com, "kiteg" <kiteg@...> wrote:
>
> I was thinking about 21/16, the "blue fourth". It's kind of a dissonant interval, plus it's overshadowed by 4/3. Could it ever get used in a chord? So I came up with the blue eleven chord:
> 1/1 3/2 7/4 9/4 21/8
> This piece, just a study really, alternates between Ab major and Ab blue eleven.
> The trick seems to be keeping the tonic down low and the blue 4th up high to create a 21/4 ratio, almost as good as a 16/3.
>
> mp3 link:
> http://notonlymusic.com/board/download/file.php?id=834
>
> streaming link:
> http://notonlymusic.com/board/viewtopic.php?f=23&t=420&p=2956#p2956
>

--- In tuning@yahoogroups.com, "kiteg" <kiteg@...> wrote:

> The trick seems to be keeping the tonic down low and the blue 4th up high to create a 21/4 ratio, almost as good as a 16/3.

And it works! For your next trick, you could sneak an 11/2 in there by way of variation.