Chord & FretF/A# — with the eleventh in the bass
Also written F/Bb — the same chord, spelled the other way.
Notes in F/A#: A# – F – A – CFormula: 1 – 3 – 5 / 11In 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 C triad over an F bass. From the bottom up it gives an F with a seventh and a ninth: a wide subdominant with no weight down low.
The same chord on all four instruments
Where to use it: Subdominant pedals, intros and suspended moods in the accompaniment.
The shapes of F/A# 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 Inversions (slash) family.