I agree, fully, with Donny. I have never been able to fully read the dots and transmit the information to my hands. However, I have always been able to merely listen to a song and determine the chord progression and after a couple practice shots, I was usually able to play and sing the song. Granted, there are likely lots of transition chords that I missed along the way, but they eventually came into play. Now, I freely admit that it is rare when I play a song in the written chords. However, that is only because those chords are often well out of my vocal range, and I depend heavily on my vocals for every performance. So, in my case, that library is already in my head and it's just a matter of extracting the information from my aging brain and transmitting that information to my fingers.

All the best,

Gary