Reminds me of Iron Butterfly :)

This one is cool - as the bass and organ never change. :)

This tune is one of my top ten favorites of all time. It's originally performed by The Mike Curb Congrigataion and used as a music track for the movie "Kelly's Heroes" starring Clint Eastwood, Telly Salavas, Caroll O'Conner, Don Rickles, Donald…