Yes
Fragile

Yes are undoubtedly one of the most representative bands of the so-called English progressive rock of the early '70s, alongside Genesis, King Crimson, and Pink Floyd.
"Fragile," an album from 1972, is certainly their masterpiece, an album that manages to blend rock and classical music with a superb technique, never an end in itself but always in service of the melody and the song.

The opener of the album is the splendid Roundabout, introduced by a delicate classical guitar arpeggio by Steve Howe that explodes into an engaging eight-minute song.
Yes are virtuosos, and you can tell; but the real standouts here are Chris Squire's bass and Rick Wakeman's keyboards, offering us a great Hammond solo in the middle.
Three more songs properly speaking are: South Side Of The Sky where Howe's guitar is much more rock than usual, and Wakeman delights us with a beautiful solo part this time on piano; Long Distance Runaround which is fun for three minutes but doesn't fully convince; but the true masterpiece is the concluding Heart Of The Sunrise: eleven minutes of offbeats, almost jazzy parts, and instrumental intertwining that will leave you dizzy but never fall into self-indulgence.

The other tracks are little more than solo showcases for each member. In this context, Steve Howe certainly makes the best impression in Mood For A Day where he becomes a modern minstrel, crafting sweet guitar arpeggios.
Wakeman, on the other hand, tackles a reinterpretation of a classical piece by Brahms, Anderson plays with his voice in We Have Heaven while Bill Bruford grants a few but amazing seconds of offbeat drumming in Five Per Cent For Nothing. Chris Squire in The Fish (which is a sort of coda to Long Distance...) experiments with distortions on his bass.

Ultimately, Fragile is a masterpiece of '70s prog rock of the English school, and I recommend it to anyone who unfortunately hasn't yet had the pleasure of listening to it, and I think it can be a good starting point for those who want to approach this genre without being disappointed.