I do not think that I can offer much help on "music recording formats that allow one to hear old favorites in surround." To me, this implies taking original stereo/mono recordings and up-mixing them to multichannel. I let the record companies do this but, personally, do not care for it.
I have little interest in anything other than discrete multichannel recordings made from discrete original tracks.
P.S. I write for Stereophile only. I do post here and on other forums for my personal entertainment.
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