The enharmonic equivalent to A-flat is G-sharp; The enharmonic equivalent to G-flat is F-sharp.
G double sharp is a very clumsy way of saying (enharmonically) "A natural".
The enharmonic of E-sharp is F-natural.
A sharp.
D-flat
It's called enharmonic spelling. An example is C-sharp and D-flat.
F sharp is the enharmonic.
F sharp is the enharmonic.
The enharmonic equivalent to A-flat is G-sharp; The enharmonic equivalent to G-flat is F-sharp.
B flat
A flat
Yes.
Being that it's a whole-step away from another sharp or flat note in both directions, there is no possible double-sharp/flat spelling for it.
The equivalent of an f sharp is a G flat.
G double sharp is a very clumsy way of saying (enharmonically) "A natural".
G sharp (enharmonic A flat).
G sharp (enharmonic A flat).