Chord & FretBbmaj13 — major thirteenth
Also written A#maj13 — the same chord, spelled the other way.
Notes in Bbmaj13: Bb – D – F – A – C – GFormula: 1 – 3 – 5 – 7 – 9 – 13In 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.
The tallest major extension: major seventh, ninth and thirteenth over the triad. It sounds full and settled, with a wide shine on top.
The same chord on all four instruments
Where to use it: The last chord of ballads, jazz and MPB — an ending that rests without sounding plain.
Every region of the neck hides more shapes of Bbmaj13. In Chord & Fret, you check it note by note, playing any shape as an arpeggio; compare positions with their difficulty marked; 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 Extended family.