Most of the quadraphonic titles by Isao Tomita were released on CD in Dolby Surround around 1991 and some are still available. I have a few CD's in my collection that are Dolby Surround encoded (The Hollywood Sound -John Williams/London Symphony Orch ; Oracle - Oracle; Let Robots Melt - Kenneth George Mills). I am not aware of any pop/rock CDs encoded in Dolby Surround. However, there are quite a few matrix (QS, UHJ-Ambisonic, Circle Surround,...) encoded CD titles that decode nicely with DPLII.