OIC. Yeah...not sure where I came up with those chord ideas...lots of influences and probably trial and error. :)
No, there's no other version yet. You mentioned vocals. I've written words to this one and would love to find a singer but haven't done much (if anything) to find one yet. In the meantime I had to record this or my head might have exploded. :)
How long to do this? Well, maybe 5-6 hours of actual recording. Or probably more, I can't remember. A few hours to write the words. 3 seconds for the opening line to come into my head and 6 hours or so to figure out the rest of the melody. :) It was one of my faster ones, but it's a pretty simple arrangement. Thanks again.