Chord Information
Learn how to play Fm7b5 on piano
Notes in Chord
Intervals
Inversion
Notes (bottom to top): F4 - Ab4 - B4 - Eb5
Right Hand Fingering
3=middle, 4=ring, 5=pinky
Interactive Piano
Click the highlighted keys to play the Fm7b5 chord
About the Fm7b5 Chord
The Fm7b5 chord (Fø7) provides sophisticated half-diminished color in flat-key harmony. Built from F-Ab-Cb-Eb, this chord functions as ii in Eb minor, creating the classic minor ii-V-i progression. Its dark character suits introspective and dramatic musical moments.
What makes Fm7b5 useful is its position in common flat-key progressions. In Eb minor (parallel minor of Eb major), Fm7b5 begins sophisticated minor cadences.
On piano, Fm7b5 combines F and Eb (white) with Ab and Cb/B (black). The chord's dark color creates forward motion toward Bb7.
Music Theory & Usage
Fm7b5 functions as ii in Eb minor, where it leads Fm7b5-Bb7-Ebm. In Gb major, it serves as vii. The chord appears in jazz standards requiring Eb minor harmony.
The half-diminished sound provides sophisticated minor color in flat-key contexts.
Famous Songs Using Fm7b5
Hear how professional musicians use the Fm7b5 chord in these well-known songs:
“Round Midnight”
by Thelonious Monk
Uses Fm7b5 in its dark progression
“Yesterdays”
by Jerome Kern
Features half-diminished chords
“It Could Happen to You”
by Jimmy Van Heusen
Contains m7b5 voicings
“Darn That Dream”
by Jimmy Van Heusen
Uses half-diminished color
How to Play Fm7b5 on Piano
- Place your thumb on F.
- Place your index finger on Ab.
- Place your middle finger on B.
- Place your pinky finger on Eb.
- Press all keys simultaneously to hear the Fm7b5 chord.
Recommended fingering: 1-2-3-5 (right hand)
Fm7b5 Chord Inversions
The Fm7b5 chord can be played in different inversions:
Root Position
F - Ab - B - Eb (bass note: F)
First Inversion
Ab - B - Eb - F (bass note: Ab)
Second Inversion
B - Eb - F - Ab (bass note: B)
Common Chord Progressions Using Fm7b5
ii-V-I Jazz Progression
Common chord progression
I-vi-ii-V Progression
Common chord progression
Practice Tips for Fm7b5
- Start slowly and focus on pressing all keys simultaneously for a clean sound.
- Practice transitioning between Fm7b5 and other common chords to build muscle memory.
- Listen carefully to how the seventh interval creates tension and color in the chord.
- Practice resolving this chord to its natural target chords in progressions.
Frequently Asked Questions about Fm7b5
What notes are in Fm7b5?
Fm7b5 contains F (root), Ab (minor 3rd), Cb/B (diminished 5th), and Eb (minor 7th). The b5 is spelled Cb in theory but sounds like B.
What key is Fm7b5 the ii chord of?
Fm7b5 is the ii chord in Eb minor. The progression Fm7b5-Bb7-Ebm is the minor ii-V-i in Eb.
Why is the 5th spelled Cb instead of B?
In strict music theory, the diminished 5th above F is Cb (F-Cb is a diminished 5th). F-B would be an augmented 4th. Practically, they're the same key—B natural.
How does Fm7b5 voice-lead to Bb7?
F can stay or move to D, Ab moves to Ab or G, Cb/B moves to Bb or stays, Eb stays or moves. Smooth voice leading keeps common tones while others move by step.