the black and white which i haven't touched for at least 16 years, and just last week, with the opportunity, space and time, mostly the strange need to reach out and once again firmly touched each and everyone of them. Quite weird, i needed no written notes, simply followed the sound with my ears, what you call them 'play by ear'?!
So far with 3 breaks, i'v managed the right hand main melody, working on the left hand. we'll see how far that gets esp. with vacation days.