I use to be able to set down and play about 75 songs without the music. I took a 15 year break where I did not play. Now, I am a bit discuraged that I do not remember more than a small handfull.
So, I find myself totally re-learning these songs...and it's not as easy as when I was younger. Now I seem to need the leadsheets more.

Is there any suggestions for memorizing songs?
And, yes, I do remember I used to adlib some and change up the sounds to make it less boring.