Don't know if you're into this kind of thing, but if you bear in mind which studios, what was done in, when and where, this site might help you understand why the sound on some things is the way it is.
The acoustics of the studio, the studio gear that was available, including pianos (like it was probably the same piano used on Hey Jude, as Life On Mars, as Killer Queen, and a few other classics.
Have a read, I find it fascinating.
Mind the spelling, it goes a bit haywire in places, and some of the facts might be a bit open to argument, if you know your onions like Sebastian does.http://philsbook.com
Think of Kashmir by Led Zeppelin... Well, that went through some of the same machinery that bits of Live Magic did, on their ways to their respective albums. Not counting Smoke On The Water by Deep Purple!!!
What's relevant to Queen? The first two albums were recorded at Trident, with the exception of 'The Night Comes Down', a lot of Sheer Heart Attack was also recorded there. Elements of ADATR were recorded at Richard Branson's The Manor and Wessex. Most of News Of The World at Wessex. The Rolling Stones Mobile, and The Manor mobile were used for Live Magic. Flash Gordon was done at Advision. ANATO at Sarm, Olympic, Scorpio, Landsdowne, and Rockfield. The bits of A Kind of Magic, not recorded in Montreux and Munich were done at The Townhouse. I think The Miracle had bits recorded at Olympic and The Townhouse, and a lot of Innuendo was recorded at Metropolis. Oh, I almost forgot... CTS studios Wembley, aka The Music Centre, was one facility that DeLane Lea evolved from, and that was pretty much where recording started for Queen.
I should add that bits of One Vision were recorded at a place called Maison Rouge, though most of it was done at Musicland, Munich. I couldn't find a link to it on Phil's page, but low and behold when I searched the studio I dependently, this came up http://www.philsbook.com/maison-rouge.html
No credit on either the AMOM album or Phil's site, but I'm sure it mentions it on the single itself.