Sound Creature, the very first version

Anyway, I created the first version of sound creatures; it was not so easy, but I could enjoy it a lot. Yesterday, I "woke up" them and let they are chatting with sounds. It seems they, somehow, communicate with each other and create wired sounds. I will give them good "ears", which means use microphones. And I will give birth abilities of "singing". Well, and I would like to add capabilities of evolution. A