DbEbGBb

DbEbGBb is a four-note pitch-class set consisting of the notes D-flat, E-flat, G-flat, and B-flat. Enharmonically, these pitches correspond to C-sharp, D-sharp, F-sharp, and A-sharp. In the context of the D-flat major scale (Db, Eb, F, Gb, Ab, Bb, C, Db), the collection aligns with the 1st, 2nd, 4th, and 6th scale degrees, making it a diatonic subset rather than a named chord on its own. Nevertheless, it is commonly used as a color voicing in harmony.

The intervallic relationships between consecutive notes are: Db to Eb is a major second, Eb to Gb is a minor third, and Gb to Bb is a major third. The overall sonority can be heard as a Db-major flavor that emphasizes tensions corresponding to the 9th (Eb), 11th (Gb), and 13th (Bb) relative to the tonic, often voiced without the 3rd or 5th.

Usage and interpretation: in jazz and contemporary music, DbEbGBb can function as a practical voicing for the tonic harmony with upper tensions, providing a bright, open sound without explicitly stating the 3rd. It is also encountered as a fragment in melodic or harmonic analyses that explore diatonic subsets of major scales.

Origin and naming: there is no widely established name for this exact four-note collection. It is typically described by its relation to the Db major scale as a 1-2-4-6 subset or understood as a Db major harmony voiced with added 9th, 11th, and 13th tensions while omitting the 3rd and 5th. See also: pitch-class set, diatonic scale, chord voicing.