What people also forget that is when Blackmore left Deep Purple to form super group Rainbow with Dio, they were looking for a kick ass drummer. Blackmore was looking at this pacey youngster named Zaha, but he was asking too much for wages.
Sneaky sneaky Jon Lord and the phone to Dio convinces him that Iwobi is everything they need in a drummer at a fraction of the price, but he must sign him quick, because other bands are interested. Panic signing and no one was interested.
That's why early Rainbow wasn't so great... Iwobi was shown the boot, and then all of the sudden: 'Long live rock 'n roll!' had some pace!