Inexplicable AM Earworm

Just A Closer Walk With Thee - Sung by a man initially, but when I started thinking about it, it changed to the Patsy Cline version.

Which begs the question - Why would I be hearing an obscure (to me) version which only changes to a well known (to me) version when I focus? Seems that is some indication of more complexity to the earworm phenomena than I usually accredit. Such as, possibly it has connections to a really deep part of the memory and subconscious. Or perhaps sometimes, (for me anyway) it’s picking up stuff from “outside”. Interesting questions if anyone (but me) gives a fig.