F Diminished
Fdim is made of 3 notes: F, Ab and Cb (B). Here it is in root position, with F at the bottom.
Inside Notley Piano: all the inversions of Fdim, fingering for both hands, a play button, and practice that helps you remember it.
| Note | Degree | Interval from F |
|---|---|---|
| F | 1 | root |
| Ab | b3 | minor 3rd |
| Cb (B) | 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.