In the folly of my youth I did an LP before I teamed up with Magaret. I sang a version of Looly, Looly and instead of singing corpus christi writ thereon, I sang cobbles twisting writ thereon. Didn't make any sense, but I sang it. And now it's scratched forever in these grooves. There will never be a CD version.
I once heard a singer singing "Lock Keeper" with the line "wounded eyes," rather than "moonlit eyes." They weren't all that grateful to hear the correct lyrics.