Sourdough,Yes. Many times I've re-heard a tune and found in it something that I'd overlooked before. For me, it might be the addition of a new chord in the accompaniment or a new context musically or historically. Sometimes, I will alter a tune or chords if I hear it a new way. Or sometimes a collated text (putting together different verses of the same song)brings the song to life for me. Or sometimes a new variant of a familar song excites my interest. When I did my new CD I changed tunes, added verses and applied different chords than I had heard in other performances. A good example of a song that has been overlooked for me would be Red Rosy Bush.
Frank Hamilton