Here are a few audio samples (mp3). All have been recorded live... some in concert!

Electronic organ (Yamaha EL90)
I'm So Excited
Space Oddity
Dr. Who
Mas Que Nada

Theatre organ (Wurlitzer)
Get Happy - Woking
Who? - Plummer Auditorium, California
Take Five - South Bank University
Danse Macabre - Plummer Auditorium, California

Adam's digital theatre organ (Evans!)
When Sonny Gets Blue