True, there is also the effect memory: I was a teenager in the 70s ... and Deep Purple was my first real "rock experience" (the Stones, next, it seemed to me flat .. .). Still. I did discover this album, recently, a little guy of 16, keen on guitar and Led Zeppelin. Curiously he did not know "in rock": it is not yet recovered ... Totally subdued.
Info on severe describe the music of Deep Purple on this album, we can refer to the excellent reviews below ... Nothing to add. If we all want to say the same thing, for once, talking example of this amazing mixture of strength and softness, speed and breaks, classical influences and vibrating hard-rock, this is not trivial ...
No, really, I do not have a lot like that album in my CD collection, which at this point are "indispensable" ...