Hi! I’m the cellist and arranger of the Divine Hand Ensemble. Our latest video features the theremin as an opera singer. http://www.youtube.com/watch?v=QzVFU76vaPM
Feel free to check out our other videos at: https://www.youtube.com/user/DivineHandEnsemble/videos
or www.divinehand.net
Most enjoyable! 
Wow very nice!!