Fig. 1 · Bdim on the keyboard

piano chord

Bdim

B1D♭3F♭5

Two minor thirds stacked. The fifth is diminished, so it cannot be dropped without losing the chord.

on guitar on ukulele the scale

What is true of it

Bdim is B, D and F — 1, b3 and b5 counted from B.

B in other shapes

Bmajor Bmminor Baugaugmented B5power chord Bsus2suspended second Bsus4suspended fourth

Cdim C♯dim D♭dim Ddim D♯dim E♭dim Edim Fdim all 374