45cm, Pine and Goat.
 
Air tuning frame drums has been used for quite a while now, no reason why it shouldn't work for the Ceremonial frame drums as well. (using a regular bicycle pump) So i had a go in making one and I'm very happy with what came out. To listen to the video i always recommend headphones or good speakers. This one is for sale and I'm making few more, if you are interested please let me know. Peace and love