I'm just watching the dvd "Deep Purple The Ultimate Collection" about the history of the band from mk1 until mk4.
Very interesting, and Glenn is talking also here. Must have been a couple of years ago maybe on 2006?
So what is important for a significant purple album?
I think it's just tension, that's the magic word.
When musicians are able to push one another into higher regions it is a good thing.
On mk2 it was the tension between Blackmore and Lord musically and certainly Blackmore and Gillan. But between them it went wrong like we all know.
Until "Machine Head" it worked, for me the tension was on optimum on "In Rock".
Then after mk2 the tension became stronger with Glenn and Coverdale joining the band.
On "Burn" all members of purple were grown, and Blackmore played better than before on my personal opinion.
Blackmore is a "funky" guitarplayer indeed in a subtle way, also Glenn said that here, and together with Glenn Ritchie Blackmore could grow on a rythm level again.
"You fool no one" is a masterpiece of that new rythm quality of the band.
The tension was pyramidal, rock against soul, classic against blues.
Like in a good musical instrument the tension has to be perfect to achieve a good tone, the same thing happens in a band. Sometimes