Chord and 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 and 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 and Fret →Part of the Extended family.