Songs that last tend to share a few similarities: beautiful melodies that catch the ear and won't let go; lyrics to which one might feel kinship with. I'm partial to major key melodies, can think of very few minor key melodies I care for at all. (And remembering the latter would be a task.) The beautiful melody part is something I first noticed five or six decades ago--time flies when you're having fun. If the song's not got a good melody or at least one that works with the lyrics then I doubt it will be long remembered--but having made more than a few misjudgments along the way, I could be wrong. Nice offer and I'll likely take you up on it, Jim. Thanks.