TL;DR: an amateur composer who never learned to write down his music is developing Alzheimer's, and slowly forgetting how to play the songs he wrote. His daughter recruits her friend, a musician who can learn by ear, to record him playing the fragments he still has left and to work with him to fill in the gaps. In the end, she produces a CD of his work and plays his songs at a concert, so that the songs he wrote will live on even as they disappear from his head.