Nice one Jim !

thank you @ABitRusty , @Mark - it's getting there....   Next task is to do something that approximates to the lead guitar solo part - it's a bit darned fast (for me) and way up the neck on the guitar  ( and in fact, at the time the album came out, because the guitar solo was so "clean" it was said that Oldfield had played it at half-tempo, an octave down and then sped it up in the studio mix - but that is not true..... ) - I'm about to do something naughty here - since the official version appears to be blocked states-side, I'll record an audio extract of the bit I'm talking about and post it here - you'll see what I mean.... (and I have no sheet for this, it's all by ear) - 

And as an official disclaimer and attribution to the originator of the original work - this extract from the Crises official video release is for two purposes - (1)  educational, and (2) to share some small part of Mike Oldfield's awesome music !

Thanks Tim @starise - yeah, I'm just an old rocker at heart !