B/A# on guitar: B with A sharp in the bass
B/A# is B with A♯ in the bass. That A♯ is the chord's 7th, so what you hear is B7M in 3rd inversion (B7M/A♯), with the notes B, D♯, F♯, A♯.
- Notes
- BD♯F♯A♯
- Bass
- A♯ 7th of the chord · B7M
How to play B/A# on guitar
-
Shape 1 · 1st position
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Shape 2 · fret 4 · barre
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Shape 3 · fret 7 · barre
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Shape 4 · fret 2 · barre
Where B/A# shows up
The 7th in the bass wants to step down. The most common path: B → B/A# → G#m, with the bass walking down B, A♯, G♯.
Other positions of B
Frequently asked questions
What does B/A# mean?
B/A# reads "B over A♯": you play B and the lowest note is A♯. In a chord symbol, whatever comes after the slash is always the bass.
What is the difference between B/A# and B?
B/A# has one more note: A♯ in the bass, which is the 7th. That is why it sounds like B7M in 3rd inversion.
How do you play B/A# on guitar?
The shapes on this page go from easiest to hardest. In all of them A♯ is the lowest note; the low strings that would sound below it are not played (x).