C#Ø9

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

C#Ø9 Chord

Chord Tones

Interval	Note
Perfect 1st	C#
Minor 3rd	E
Diminished 5th	G
Major 9th	D#

Piano position

Staff notation

Play chord

Select chord name

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C#maj6

＋ Aliases

C#6

C#69

C#maj7

＋ Aliases

C#M7

C#maj9

C#maj11

C#maj13

C#maj7#11

C#maj7b5

C#maj7#5

C#m

＋ Aliases

C#min

C#m6

C#m7

＋ Aliases

C#min7

C#m9

C#m11

C#m13

C#mMaj7

＋ Aliases

C#mmaj7 C#minMaj7

C#madd9

C#7

＋ Aliases

C#7alt

C#9

C#11

C#13

C#7b9

C#7#9

C#7b5

C#7#5

C#7b11

C#7#11

C#7b13

C#7#13

C#7b9b5

C#7b9#5

C#7#9#5

C#13#11

C#13#9

C#13b9

C#13b5

C#13#5

C#13#9#11

C#13b9#11

C#13b9b5

C#13b9#5

C#13#9b5

C#13#9#5

C#sus

＋ Aliases

C#sus4

C#sus2

C#7sus

＋ Aliases

C#7sus4

C#9sus

C#dim

＋ Aliases

C#dim7

＋ Aliases

C#o7 C#07 C#ø7 C#Ø7

C#ø

＋ Aliases

C#Ø C#m7b5

C#Ø9

C#m#5

＋ Aliases

C#aug C#+

C#add9

C#add11

C#5