(More than one) different oldies at different times seem to occupy my head space.
Lately I have been substituting one of the nicknames I use for one of my dogs for the word "Dixie" in "the Night They Drove Old Dixie Down." I’ve been doing the same thing with all three of my dogs names and nicknames with the word "Roland" in "Roland The Headless Thompson Gunner." Actually, for that song, I’ve been changing more words than just that.
Come to think of it, I don’t do it as often, but sometimes I do the same thing with Maxwell’s Silver Hammer. I sing the song using one of my dog’s nick names in place of Maxwell Edison. Actually I think it was that oldy with a previous dog (may he RIP) that got me started doing the same thing with my current three dogs using different oldies.