GbBbEb

GbBbEb refers to a triad consisting of the pitches G-flat, B-flat, and E-flat. When spelled as Eb-Gb-Bb, these notes form the Eb minor triad, and the voicing Gb-Bb-Eb places the third of the chord in the bass, i.e., Eb minor in first inversion.

Eb minor triad is built from the root Eb, a minor third up (Gb), and a perfect fifth (Bb). The arrangement Gb-Bb-Eb is thus Ebm in first inversion. The triad is enharmonically equivalent to D# minor (D#-F#-A#) when spelled differently. In the key of Gb major, Eb minor functions as the vi chord.

In tonal music, Ebm provides a melancholic or somber color and commonly appears in minor-key progressions and in modal mixture. In jazz and pop, it can be used as a standalone triad or as part of larger seventh-chord structures such as Ebm7 (Eb-Gb-Bb-Db).

Chord symbols generally denote the triad as Ebm; Gb-Bb-Eb can be used as a specific inversion voicing (Ebm/Gb). The pitch set Gb-Bb-Eb comprises the Eb minor triad, and is widely recognized across Western music.