Looking for Oct Performance in Needham

I am looking for a Theremin player who can do a 1 hour program for children at the Needham Free Public Library in Needham, MA in October. We do a lot of STEAM (Science, Technology, Engineering, Art and Math) programming here for children. The Theremin seems like a great combination of entertainment, art, science and a little touch of spooky for Halloween. I would like someone who can explain how the theremin works, explain its use in movies - like horror and science fiction films- play some songs and maybe let a volunteer or two give it try.  The children would be school-aged. The performer could set a minimum age requirement such as 6 years old and up or 8 years old and up. I work with children up to 12 years old. This pays. Please contact me at pdugan@minlib.net