I just put Rainbow Rising on, an album I'm not all that familiar with, though I've heard it a couple of times. I knew nothing about the credits.
The minute the band started to play, I swear I could see the name Martin Birch in front of my eyes - whom I know mostly for his work with Iron Maiden - more so than with Purple, though in this case, I definitely heard the Come Taste the Band type of sound.
I'm trying to think of recognizable (pop/rock) producers... Mutt Lange comes to mind.