The Massacaglia is a form invented by Tomislav Ante Vodjakovic. The name Massacaglia comes from the name of our friend the talented organist Luca Massaglia.
The massacaglia is in fact a passacaglia-fantasia whose structure is A-B-A-C-A where A is a passacaille and B & C are fantasia.
This piece is the 4th massacaglia written. The first one was Tomislav's one, the second was Carlotta Ferrari's, the 3rd in D minor was mine.
Midifile and free PDF score attached