F#dim7 Verminderter Septakkord Akkord

The F# Verminderter Septakkord chord contains: F#, A, C, D#.

These notes are derived by applying the diminished 7th interval formula (0–3–6–9 semitones) to the root note F#.

Four notes stacked in minor thirds.

Extremely tense, used as a passing chord. The F#dim7 chord is used across pop, rock, jazz, and classical music. As the I chord in the key of F# major, it functions as the most stable resting point in progressions.

On piano, play F#, A, C, D# simultaneously.

In root position, F# is the lowest note. Inversions move the bass note up — first inversion has A lowest, second inversion has C lowest.

A diminished 7th chord has 4 notes: F#, A, C, D# (in F#).

It is a 7th chord, extending beyond the basic triad.

The F# major chord (F#–A#–C#) uses a major third (4 semitones), giving it a bright, happy sound.

The F# minor chord (F#–A–C#) uses a minor third (3 semitones), giving it a darker, emotional sound.

F#dim7 naturally serves as the I chord in the key of F# major.

It also appears as IV in the key of C# major, and as V in the key of B major.

Yes.

The ukulele uses GCEA tuning with 4 strings. The F#dim7 chord notes (F#, A, C, D#) can be fretted on a ukulele, though the shapes differ from guitar due to the 4-string layout and shorter scale.

In the key of F# major, F#dim7 pairs naturally with B major (IV), C# major (V), and D#m (vi).

The classic I–IV–V (F#dim7–B–C#) is the foundation of blues, country, and rock.

An inversion places a non-root note in the bass.

F#dim7 root position: F# in bass. First inversion: A in bass. Second inversion: C in bass. Inversions create smoother bass line movement without changing the harmony.

Remember the formula: 0–3–6–9 semitones from root.

For F#dim7: start on F#, add 3 semitones, then 6 semitones, then 9 semitones. Practicing this across all 12 roots builds instant recognition of any diminished 7th chord.