From what I can imagine, they would not sound musical to our modern ears. However, I have great respect for the idea of using these unusual instruments as unique features for my upcoming production of "Never Cry Wolf." In Scene 5, the artisan character Altair the Magnificent, brings his Muses and Musicians to help him get in the mood for painting a set of Commemoration Amphora (the Greek vases famous for capturing scenes of Greek life from the ancient times.)
The production number "Set It for Posterity" allows the Muses adjust the poses of the Politicians to help them look heroic for their portraits on the vases. The Musicians, of course, play their authentic replica instruments during this wild and wonderful romp complete with demonstrations of1960's dance crazes and a rock 'n roll guitar solo. Yes, the instruments are key to this number!
The Tympanun are simply variations of hand drums. I decided that Quaker Oats containers were the perfect size and shape. I painted them and added "skins" out of fake leather held on with glue and rubber bands. Seems to work out well. Sturdy enough for four performances, anyway.