Key gb意思

"Key Gb" or "Gb Major" is a musical key or scale. It refers to the G flat major scale, which is a major scale that starts and ends on the note G flat. The G flat major scale has seven notes, and its key signature has five flats (Bb, Eb, Ab, Db, and Gb).

The Gb major scale would be spelled as follows, starting from G flat and going up to the next G flat:

Gb, Ab, Bb, Cb, Db, Eb, F, Gb

Cb is a enharmonic equivalent of B, meaning it is the same note but named differently depending on the key or context. In this case, Cb is used because it follows the pattern of descending semitones in the key of Gb major.

When talking about music in the key of Gb major, it means that the music is centered around the Gb major scale, and the harmony and tonality are based on the chords and notes from this scale.