That "Save The Earth" song took a long time to get out of my head when I first heard it many years ago! I recall when Elvira ran the film on Movie Macabre in the 80's, she did some dancing to it.

I could have sworn there was a pan and scan Laserdisc of the old English dub. There is a double feature DVD of it paired with Godzilla Vs. Megalon I've seen on Ebay. Probably not Toho approved, but at least one seller claims it's the original english dubs, so maybe the title cards are there as well?