B Diminished
Bdim is made of 3 notes: B, D and F. Here it is in root position, with B at the bottom.
Inside Notley Piano: all the inversions of Bdim, fingering for both hands, a play button, and practice that helps you remember it.
| Note | Degree | Interval from B |
|---|---|---|
| B | 1 | root |
| D | b3 | minor 3rd |
| F | b5 | diminished 5th |
A diminished chord stacks two minor 3rds, so it has a flat 5th. It sounds tense and unstable, and is usually used as a passing chord.