Diminished Triad vs Diminished 7 on Ukulele
The C diminished triad and the C diminished 7 share 3 notes — C, Eb, Gb. From there, the C diminished 7 adds Bbb.
Ukulele, tuned low to high: G, C, E, A. 12 frets.
- G string: fret 2 Bbb (double flat 7), fret 5 C (root of C Diminished Triad and root of C Diminished 7), fret 8 Eb (flat 3 of C Diminished Triad and flat 3 of C Diminished 7), fret 11 Gb (flat 5 of C Diminished Triad and flat 5 of C Diminished 7).
- C string: fret 0 C (root of C Diminished Triad and root of C Diminished 7), fret 3 Eb (flat 3 of C Diminished Triad and flat 3 of C Diminished 7), fret 6 Gb (flat 5 of C Diminished Triad and flat 5 of C Diminished 7), fret 9 Bbb (double flat 7), fret 12 C (root of C Diminished Triad and root of C Diminished 7).
- E string: fret 2 Gb (flat 5 of C Diminished Triad and flat 5 of C Diminished 7), fret 5 Bbb (double flat 7), fret 8 C (root of C Diminished Triad and root of C Diminished 7), fret 11 Eb (flat 3 of C Diminished Triad and flat 3 of C Diminished 7).
- A string: fret 0 Bbb (double flat 7), fret 3 C (root of C Diminished Triad and root of C Diminished 7), fret 6 Eb (flat 3 of C Diminished Triad and flat 3 of C Diminished 7), fret 9 Gb (flat 5 of C Diminished Triad and flat 5 of C Diminished 7), fret 12 Bbb (double flat 7).
Swipe the chart sideways to see all of it.
Both scales above are drawn on one ukulele fretboard in the key of C. Notes belonging to both are drawn as a split two-color dot, so the notes they share and the notes unique to each are visible in one picture.
How the formulas differ
Scale degrees are the key-independent way to compare two scales — these stay the same in every key, and they are what actually distinguishes one scale from another.
| Scale | Degrees |
|---|---|
| Diminished Triad | R · b3 · b5 |
| Diminished 7 | R · b3 · b5 · bb7 |
Notes in common
| Note | In Diminished Triad | In Diminished 7 |
|---|---|---|
| C | R | R |
| Eb | b3 | b3 |
| Gb | b5 | b5 |
Notes that differ
- Only in the diminished 7: Bbb (bb7)