Hello! I am new and posting my first post on these forums... so I hope I have posted in the right place for my question. I should say first that I am not a Physicist, I am a Mathematician. So please keep answers as easy to understand as you can. I also apologize for the fact that my question will take us into the realms of music theory which many of you will not (nor could you be expected to) understand. I hope you understand the fact that the musical octave does not fit without certain notes being tuned slightly off? I now remember reading somewhere that Einstein had shown that it was only in our space-time continuum that the octave does not fit (and it is only my guess-work that has linked this with relativity). Is this indeed correct? and if so, could someone explain how it works please? I would also be interested to know if there would be any way of finding (even a mathematical basis of) a space-time continuum in which the octave does fit without some notes needing to be tuned off. Hope you understand what I am on about, and I apologize for my lack of knowledge about physics. Lear.