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Chord & Fret

C(b5) — major flat five

Notes in C(b5): C – E – GbFormula: 1 – 3 – b5

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.

It keeps the major third and lowers only the fifth by a semitone. It is the major triad seen through cracked glass: still recognisable, but something is out of true.

The same chord on all four instruments

C(b5), x 3 4 5 5 0C(b5)1234×CGbCEE
Guitar
C(b5), x 3 4 5 5 0C(b5)1234×CGbCEE
Electric guitar
C(b5), 2 5 5 4C(b5)1342ECEGb
Cavaquinho
C(b5), 5 6 0 3C(b5)3231CGbEC
Ukulele

Where to use it: A rare, modern colour; in practice it shows up far more with the seventh attached, as C7(b5), than on its own.

The shapes of C(b5) don't end on this page — the whole neck holds dozens. In Chord & Fret, you hear every shape strummed string by string, in each instrument's own voice; open every variation on the neck, grouped by bass note; and change the tuning — the shape rewrites itself. Start free. Unlock everything with Pro. Plays offline.

See the whole neck in Chord & Fret →

Part of the Triads family.

Other chords in this family

CCCCCmCmCmCmCdimCaugC5

See all chord types and qualities →