Hi,

Could you tune a piano to phi? [Ignoring the fact that the second value is not unique.]

Ye-es, but: A phi sequence would fall between a sequence of fifths (1.5) and the sequence of octaves (2). [Close to sixths, actually.]
It would therefore make more sense as a sequence of intervals and less as a sequence of subsequent tones. The latter would run out of hearing range rather quickly.

But then you'd need tones within your intervals as well. This leads to the questions of how many tones and whether that number too should be Fib-related. And it requires a real equivalent to the integer Fibonacci sequence. (There was something about that, but I can't recall with this headache (on which I'm also blaming any mistakes in this message).) This may all be even more complicated than calculating the tones in the octave interval as we know it. But, it probably could be done, if one were motivated enough.

Bye

Mysha