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