Hi mbl,
yes, I have played many times the theme from Zorba the Greek; it's a nice song (a sirtaki, from the name of the dance), based on just two chords; the problems with that song, performed on an arranger keyboard, are the choice of the rhytm (not all the arrangers have a sirtaki kind of rhytm) and the accelerando towards the end.
Regards
Andrea
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Korg Kronos 61 and PA3X-Pro76, Roland G-70, BK7-m and Integra 7, Casio PX-5S, Fender Stratocaster with Fralin pickups, Fender Stratocaster with Kinman pickups, vintage Gibson SG standard.