GBbCEb

GBbCEb is a four-note pitch collection consisting of the notes G, B-flat, C, and E-flat. It is not a standard chord symbol in conventional harmony, but the set of tones corresponds to a common chord when reorganized by pitch: C minor seventh (Cm7), which comprises C, E-flat, G, and B-flat.

In the particular ordering GBbCEb, the notes form Cm7 in a non-root position. Because G is the lowest note, this voicing represents Cm7 in second inversion, which in standard notation can be written as Cm7/G. The other possible inversions of Cm7 place the bass on E-flat (first inversion) or B-flat (third inversion).

Usage and function: As a Cm7 chord, this sonority is widely used in jazz, pop, and classical music to provide a minor seventh harmony within progressions. It commonly resolves to F major or F major seventh, or serves as a ii chord in the key of F major. The particular voicing GBbCEb offers smooth voice-leading options and preserves common tones across movements.

Notation and analysis: While GBbCEb is a valid collection of notes, musicians typically label the chord as Cm7 or Cm7/G when indicating the specific bass note. The arrangement highlights how pitch collections can be interpreted as standard chords depending on context and desired function.

See also: C minor seventh (Cm7), chord inversions, slash chords, voice-leading in seventh chords.