Folsom Prison is mainly ambience but sounds great and Silver which has some duets with George Jones and has the hit "Ghost Riders In The Sky" was remixed by Brian Ahearn who also remixed Emmylou Harris' Producer's Cut DVD~A....will give it a listen tonight to confirm the quality of the 5.1.
Actually never had the opportunity to listen to "San Quentin" fully in quad back in the day. But I was surprised at how good that rear channel sounded on one track. The track was supplied by Jim Fosgate on his SQ and Stereo Sampler tape which came with his Tate 101A . Some excellent quad tracks on that tape fwiw.
Now I have to put the SACD Silver on my want list.
thanks,