In What is the interval between Db and D# some of the comments indicate that the interval Db->Eb can be considered as a diminished third. I would think that Fbb (double-flatted F) is a diminished ...
Go up 12 semi-tones from frequency f on a guitar, and the frequency interval difference in terms of f is f = 2f - f. What is the formula for the intermediate 11 non-trivial intervals? So for k=2, ...
I hear sometimes players and composers say that this song won't sound good in F Major for example, and you should play it or write it in G Major (this was just an example). In other words, it seems ...
[I don't know a better term than "non-fixed frequency instruments" but I mean things like string instruments, voice, trombone as opposed to things like a piano which has a fixed (typically 12-et) ...