The B/D# chord is a B Major chord, with the D# (the 3rd) as the bass note.
The chord is also referred to as B over D#, or B ‘slash’ D#, or simply, B with a D# in the bass.
Technically, the B Major chord with the D# in the bass is a first inversion B Major chord.
Some B/D# Chord Theory and Info
- The B/D# chord contains the notes D#, F# and B.
- It is a B Major chord with a D sharp in the bass.
- The root note of B/D# is B, the bass note is D#.