Gb7-5 (Gb7b5) altered chord
Altered Gb chord for piano presented by keyboard diagrams.
Explanation: The Gb7-5 (or Gb7b5) alter the Gb7 by the change of one note. Gb7-5 stands for G flat seven minus five.
Theory: The Gb7-5 are identical with the Gb7 except that the fifth tone of the scale (i.e. the third tone in the chord) is flattenedThe tone is one half step lower.
Fingerings: Little finger, middle finger, index finger, thumb (left hand); thumb, index finger, middle finger, little finger (right hand).
Notes: Gb - Bb - C - E