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Chord & Fret

C#/A# — with the sixth in the bass

Also written Db/Bb — the same chord, spelled the other way.

Notes in C#/A#: A# – C# – E# – G#Formula: 1 – 3 – 5 / 13

In the formula, the numbers count steps of the major scale starting from the note that names the chord; "b" lowers a half step, "#" raises one — and a slash names the bass note.

Put an A underneath the C chord and you have exactly the notes of Am7Am7Am7Am7. What changes is which note the ear takes as home: written C/A, C is still in charge; written Am7, A takes over.

The same chord on all four instruments

C#/A#, x 1 3 1 2 1C#/A#13121×A#FG#C#F
Guitar
C#/A#, x 1 3 1 2 1C#/A#13121×A#FG#C#F
Electric guitar
C#/A#, 8 6 6 6C#/A#63111A#C#FG#
Cavaquinho
C#/A#, 10 10 9 11C#/A#92314FA#C#G#
Ukulele

Where to use it: The crossing between a major key and its relative minor, and descending bass lines generally.

This is just one shape of C#/A#. In Chord & Fret, you check it note by note, playing any shape as an arpeggio; open every variation on the neck, grouped by bass note; and set a capo — the diagrams redraw above it. Start free. Unlock everything with Pro. Plays offline.

See the whole neck in Chord & Fret →

Part of the Inversions (slash) family.

Other chords in this family

C#/FC#/G#C#/CC#/D#C#/F#

See all chord types and qualities →