Now, i know pianos get out of tune and why and I've heard some pretty interesting pianos. But..

There's an upright piano in school, whom we've named George, that has a C sounding like a B, but it doesn't continue the scale. For example it would go (higher) C B A G F E D B B A G and so on. How does that happen with only one note?

My upright grand player piano, which is 100 years old, is not in the key of C. It's a complete half step off-key and the piano tuner said that if we tried to fix it with 100-year-strings they would break or never stay. How expensive is it to replace strings like that?

Thank goodness I only have uber good relative pitch and not perfect.

piano is not such old instrument like others. I have read that in first piano Des and Cis were different key.

p.s. sory if my english is very bad.