Concerto for nine musicians

Hello!

I've composed this piece using special counterpoint rules, I hope you like it.

Not the best midi (garritan) and the score isn't revised yet.

It originally ended around the 3 minute mark, is it now too long?

Special counterpoint rules?

Melodically everything is allowed except the octave, the tritone and the outlining of triads.

Vertically, no octave doubling is allowed.

A voice may enter on a soft dissonance.

Direct (and parallel) fifths are prohibited.

Soft dissonances are approached in contrary or oblique motion.

Hard dissonances only by oblique motion.

 (No parallel dissonances of the same type.)

No resolution required.

I've written some more over it.

https://soundcloud.com/richannes-wrahms/chamber-concerto