Adagietto, from Gustav Mahler's Symphony No. 5: This is the first 3.5 minutes from the beautiful 11-minute 4th movement. Pianist Jef Anderson plays a Kurzweil 2500 Series keyboard, and the theremin is a Moog Etherwave Pro.
Knock a little digital effect on the theremin and it's a gasser. A live-in-person audience blaster. In "101 Dalmatians" the far out evil chick with the skunk-streaked wig, Cruella DeVille - her theme song.
This crazy paradiddle's called "Never Never Land" from Peter Pan. It features a way-gone Tara Buzash on piano. Theremin starts like a sax, then acoustic bass, then a stratospherized theremin.