What's a "playable state", though? Ryuichi Sakamoto challenges the notion of a singular acceptable state of the piano both on his album, 'async', as well as in 'Coda', the documentary about him.
"The industrial revolution made the production of an instrument like [the piano] possible. Several planks of wood - six I think in this case - are overlaid and pressed into shape by tremendous force for six months. Nature is molded into shape. Many tons of force and pressure are applied, making the strings what they are. Matter taken from nature is molded by human industry, by the sum strength of civilization. Nature is forced into shape. Interestingly, the piano requires re-tuning. We humans say, 'It falls out of tune', but that's not exactly accurate - matter is struggling to return to a natural state. The tsunami, in one moment, became a force of restoration. The [tsunami-damaged] piano re-tuned by nature actually sounds good to me now. In short, the piano is tuned by force to please our ears or ideals; it's a condition that feels natural to us humans. But from nature's perspective, it's very unnatural. I think deep inside me somewhere, I have a strong aversion to that." - Ryuichi Sakamoto
While interesting, I don't have an ear for de-tuned instruments. And I don't think it's too much to ask to expect a public piano to be properly tuned to the traditional scale.
I probably know 3 songs on the piano, and would enjoy playing them for people much more than sitting alone analyzing the philosophies of music in front of a de-tuned piano.
"The industrial revolution made the production of an instrument like [the piano] possible. Several planks of wood - six I think in this case - are overlaid and pressed into shape by tremendous force for six months. Nature is molded into shape. Many tons of force and pressure are applied, making the strings what they are. Matter taken from nature is molded by human industry, by the sum strength of civilization. Nature is forced into shape. Interestingly, the piano requires re-tuning. We humans say, 'It falls out of tune', but that's not exactly accurate - matter is struggling to return to a natural state. The tsunami, in one moment, became a force of restoration. The [tsunami-damaged] piano re-tuned by nature actually sounds good to me now. In short, the piano is tuned by force to please our ears or ideals; it's a condition that feels natural to us humans. But from nature's perspective, it's very unnatural. I think deep inside me somewhere, I have a strong aversion to that." - Ryuichi Sakamoto