Know what you mean, Zurf. I, too, keep a song book of all the songs I'm learning, plan on learning or can play. My wife and I have a couple of places we go to on weekends that have open mic's so we kinda have to stay on top of them. We have recently went thru our books and just never realized the number of songs we could do. Almost 70 songs that we could do without any problems and another 20 to 30 that were works in progress. Since my wife does all the singing, once we find a song we want to learn, I find the song / chords on Chordie, or elsewhere, learn it per the key of the recording, if needed rewrite some of the words so the song can be sung by a woman, then my wife and I will start to transpose the song into a comfortable key that matches her voice. We try to add 1 or 2 new songs per month to our books. Anyway, not trying to steal your thread, but, I do agree with you about keeping a song book and reviewing it when you have time. Sure is a good way to check on your progress. Also, there is no shame in using a copy of a song while proforming since we are not on a professional level.
Nela
Nela