I just saw his concert last night in Phoenixville, PA (it was a great show!, tho I was probably the youngest person there ) I picked up the concert programme, and I noticed something interesting being advertised on the back page. A huge 24 disc CD+DVD box set focusing on his activities between 1973 and 1977. The set prominently advertises an UNRELEASED 1976 QUADRAPHONIC CONCERT. I also think it wouldn't be too far-fetched to include the quad mixes of his albums from this era on DVD, but I can't find anywhere online that gives a definitive answer of what exactly is on each disc. Maybe you QQ sleuths could help me figure it out!
Rick Wakeman Emporium - The Prog Years Box Set
Rick Wakeman Emporium - The Prog Years Box Set