I unfortunately can’t think of a single "Pop" album I love both musically and sonically. Those two qualities seem to be mutually exclusive in Popular music, at least as far as my taste in that music is concerned. Cat Stevens Tea For The Tillerman is great sonically, but musically? No thanks!
Classical LP’s are different---there are a fair number I own excellent in both regards. A lot of the Harmonia Mundi titles, both French and U.S., are imo really fine musically and sonically. There is a U.K. label that specialized in Baroque (whose name escapes me at the moment, and my LP’s are still in cartons, waiting for me to set up my new racks---IKEA’s EKET) that issued a series of recordings by Brit Trevor Pinnock. Solo performances on harpsichord of Baroque material---excellent performances in great sound. Listened to through QUAD ESL’s, the harpsichord appears right before my eyes and ears, I feeling as if I am in the room in which the performances took place, the enveloping recording-venue room sound filling my listening room. Fantastic!
If you ever see any of the Ark label LP's, grab 'em. Speaker designer Robert Fulton (R.I.P.) recorded local Minnesota amateur church choral groups, and the sound is absolutely amazing---very transparent, delicate, natural. Maybe the most lifelike recorded vocals I've ever heard, including any and all direct-to-disc LP's, the sound of which I love. And I find the musical groups charming, even if not of professional caliber. I would much rather listen to some amateurs than many pro's I could mention! Steve Perry, Michael McDonald, Geddy Lee, or Kevin Cronin, anyone?