Hey I was wondering if you could help me to explore something diferent than the usal 4/4 2/4  3/4 time signatures... I would really apreciate that.

use 11/4 or 5/4
also 13/8 is useable

If you have a drum machine you can experiment with really odd ones and see if you can come up with a driving rhythm... I do it sometimes... but I always go cranky after about 30 minutes! I value my mental health so I tend to stick with the more usual ones...

My current project uses polyrhythms such that I play the melody is on the dense rhythm and the bassline on the sparse rhythm.  For example 4/7 would have a 7 note melody over a 4 note bassline.  To play polyrhythms, find the least common multiple of your numbers (7 X 4 = 28), then divide up the bar into that number of beats.  The 4-note line is played every 7 beats, and the 7-note line is played every 4 beats.

1      2      3      4     
1   2   3   4   5   6   7  

Most polyrhythms will have a number that is a multiple of 2 or 3, so look for ways to count using rhythms you already know.  That way you will feel the beat and get it up to speed.  Using the notation 1e&a2e&a3e&a4e&a, count this rhythm as

1---2--a3---4-&-5---6e--7---

Rhythms with multiples of 2 will have straight feels, and rhythms with multiples of 3 will have swing feels.  Rhythms with both are fun, and rhythms with neither are just hard.

Also check out this article on fibonacci gamelan rhythms:

http://www.redshift.com/~dcanright/fibgam/index.htm

It is possible to memorize minutes worth of organic, non repeating rhythm using Canright's system.

I have performed works using the fibonacci sequence expressed in other ways as well.  It has a way of hinting at internal repetition without ever actually repeating itself.

But the ultimate Fibonacci-based polyrhythm is the Harmonic Overtone Series.

Which brings us back to Doh.

hey, thanks for the info.. it's just what I was looking for. I hope to upload something soon using this rhythms.