piano scale
F♯ diminished (whole–half)
F♯1G♯2A♭3B4C♭5D♭6D♯6E♯7
Eight notes alternating whole step and half step. Symmetrical, so it repeats every minor third.
The same sounds spelled from the other side are G♭ diminished (whole–half).
Written out
Every accidental is written in, rather than left to a key signature, so the letters can be read one at a time.
The step pattern
F♯WG♯HAWBHCWDHD♯WE♯HF♯
What is true of it
F♯ diminished (whole–half) is F♯, G♯, A, B, C, D, D♯ and E♯, and back to F♯.
Its steps are W – H – W – H – W – H – W – H, where W is a whole step and H a half.
Chords made only of these notes
CdimdiminishedDmajorDmminorDdimdiminishedD7dominant seventhDm7minor seventhDm7♭5half-diminished seventhD♯dimdiminished
Found by testing every chord in the catalogue against these 8 sounds, not chosen.
Other scales on F♯
F♯ whole tonesymmetricF♯ diminished (half–whole)symmetricF♯ majormajorF♯ natural minorminorF♯ harmonic minorminor
C dim W-HC♯ dim W-HD♭ dim W-HD dim W-HD♯ dim W-HE♭ dim W-HE dim W-HF dim W-Hall 374