Bruce Dickinson

If Sonata track was/is really great, I wonder why he didn't include it to many editions/bonus tracks he did for his solo albums or the Best Of Collection's 2nd side where he put all the leftovers and stuff...
Let's see if it's the "wife factor" acts in this choice :) (I'm Leana Team, dont get me wrong)
I think that Sonata have 50/50 chance to be great. From reviews I can tell that this is something very far away from stuff that one would expect from Bruce. So question is - is it good enough to enjoy with open mind.