A7b5

Tetrad (four-note chord) rooted on A（Chord Tones: A, C#, D#, G）

A7b5 Chord

Chord Tones

Interval	Note
Perfect 1st	A
Major 3rd	C#
Diminished 5th	D#
Minor 7th	G

Compatible Scales

A を基準としたスケール

Lydian Dominant Whole Tone Diminished (H-W) Half-Whole Diminished Altered (Super Locrian) Lydian b7 (Dominant) Enigmatic Prometheus Tritone Chromatic

Piano position

Staff notation

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Amaj6

＋ Aliases

A6

A69

Amaj7

＋ Aliases

AM7

Amaj9

Amaj11

Amaj13

Amaj7#11

Amaj7b5

Amaj7#5

Am

＋ Aliases

Amin

Am6

Am7

＋ Aliases

Amin7

Am9

Am11

Am13

AmMaj7

＋ Aliases

Ammaj7 AminMaj7

Amadd9

A7

＋ Aliases

A7alt

A9

A11

A13

A7b9

A7#9

A7b5

A7#5

A7b11

A7#11

A7b13

A7#13

A7b9b5

A7b9#5

A7#9#5

A13#11

A13#9

A13b9

A13b5

A13#5

A13#9#11

A13b9#11

A13b9b5

A13b9#5

A13#9b5

A13#9#5

Asus

＋ Aliases

Asus4

Asus2

A7sus

＋ Aliases

A7sus4

A9sus

Adim

＋ Aliases

A° Ao A0

Adim7

＋ Aliases

Ao7 A07 Aø7 AØ7

Aø

＋ Aliases

AØ Am7b5

AØ9

Am#5

＋ Aliases

Aaug A+

Aadd9

Aadd11

A5