Bb7-5 (Bb7b5) altered chord

Altered Bb chord for piano presented by keyboard diagrams.
Explanation: The Bb7-5 (or Bb7b5) alter the Bb7 by the change of one note. Bb7-5 stands for B flat seven minus five.
Theory: The Bb7-5 are identical with the Bb7 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).


Bb7-5 chord diagram
Notes: Bb - D - E - Ab
Left hand: 5-3-2-1
Right hand: 1-2-3-5

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Bb chord categories

Bb Bbm Bb7 Bbm7 Bbmaj7 BbmM7 Bb6 Bbm6 Bb6/9 Bb5 Bb9 Bbm9 Bbmaj9 Bb11 Bbm11 Bbmaj11 Bb13 Bbm13 Bbmaj13 Bbadd Bb7-5 Bb7+5 Bbsus Bbdim Bbdim7 Bbm7b5 Bbaug Bbaug7