C#(add 9) or C#2

C# Add Ninth

The C# Add Ninth chord contains the following notes and scale degrees based on the C# major scale.

Related Chords

The following chords contain the same notes or the same pitches as the C# Add Ninth chord.

• Db(add 9): Db F Ab Eb
• C#(add 9): C# E# G# D#

Key Signatures

The notes of the C# Add Ninth guitar chord fall within the following key signatures.

• C# Major / A# Minor 
• F# Major / D# Minor