F♯ Diminished Scale (Half-Whole)

Notes in the F♯ Diminished Scale (Half-Whole)

Interval Pattern

Chords Built on Scale Degrees

Key Signature

6 ♯ — The F♯ key signature uses F♯, C♯, G♯, D♯, A♯, E♯.

F♯ Diminished Scale (Half-Whole) in Practice

The F♯ Diminished Scale (Half-Whole) uses the key signature of 6 sharps (F♯, C♯, G♯, D♯, A♯, E♯). F# major has six sharps and is enharmonically equivalent to Gb major. It is used when a sharp key is preferred over the flat alternative in notation. On guitar, F♯ positions offer open-string resonance for fingering positions for this scale.

The half-whole diminished scale alternates half and whole steps, creating an 8-note symmetrical scale ideal for dominant chord improvisation and tension-building in jazz. When played starting on F♯, the 8 notes are F♯, G, A, A♯, C, C♯, D♯, E. In this key the signature has 6 sharps (F♯, C♯, G♯, D♯, A♯, E♯). F# major uses all five black keys plus E# and B#, making it one of the most enharmonically complex keys on keyboard instruments. In modern pop and electronic music, F# appears frequently because digital instruments have no ergonomic preference, and producers choose it for its distinctive brightness.

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

Related Scales

Guitar: F♯ Diminished Scale (Half-Whole) Positions

The F♯ key offers 6 sharps (F♯, C♯, G♯, D♯, A♯, E♯) on guitar. Sharp-side keys like F♯ are idiomatic guitar keys because open strings (E, A, D, G, B, E) align with the scale's natural resonance points.