Chord Information
Learn how to play F#m7b5 on piano
Notes in Chord
Intervals
Inversion
Notes (bottom to top): F#4 - A4 - C5 - E5
Right Hand Fingering
3=middle, 4=ring, 5=pinky
Interactive Piano
Click the highlighted keys to play the F#m7b5 chord
About the F#m7b5 Chord
The F#m7b5 chord (F#ø7) is one of the most important half-diminished chords in jazz. Built from F#-A-C-E, this chord functions as ii in E minor—one of jazz's common minor keys. Its dark sophistication appears in countless standards.
What makes F#m7b5 particularly significant is its accessibility. All notes are natural/white keys except F#, making it comfortable to voice and voice-lead. In E minor, F#m7b5-B7-Em is a fundamental progression.
On piano, F#m7b5 combines A, C, and E (white) with F# (black). This shape falls naturally under the hand.
Music Theory & Usage
F#m7b5 functions as ii in E minor, where it leads F#m7b5-B7-Em. In A major, it can serve as vi with altered 5th. The chord appears constantly in jazz standards with E minor sections.
The half-diminished sound is essential vocabulary for minor-key jazz harmony.
Famous Songs Using F#m7b5
Hear how professional musicians use the F#m7b5 chord in these well-known songs:
“Autumn Leaves”
by Joseph Kosma
Uses F#m7b5 in some minor keys versions
“Lover Man”
by Jimmy Davis
Features half-diminished voicings
“Angel Eyes”
by Matt Dennis
Contains F#m7b5 in its dark harmony
“Good Morning Heartache”
by Irene Higginbotham
Uses m7b5 for melancholy
How to Play F#m7b5 on Piano
- Place your thumb on F#.
- Place your index finger on A.
- Place your middle finger on C.
- Place your pinky finger on E.
- Press all keys simultaneously to hear the F#m7b5 chord.
Recommended fingering: 1-2-3-5 (right hand)
F#m7b5 Chord Inversions
The F#m7b5 chord can be played in different inversions:
Root Position
F# - A - C - E (bass note: F#)
First Inversion
A - C - E - F# (bass note: A)
Second Inversion
C - E - F# - A (bass note: C)
Common Chord Progressions Using F#m7b5
ii-V-I Jazz Progression
Common chord progression
I-vi-ii-V Progression
Common chord progression
Practice Tips for F#m7b5
- Start slowly and focus on pressing all keys simultaneously for a clean sound.
- Practice transitioning between F#m7b5 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 F#m7b5
What notes are in F#m7b5?
F#m7b5 contains F# (root), A (minor 3rd), C (diminished 5th), and E (minor 7th). Only F# is black; others are white keys.
Is F#m7b5 the same as Gbm7b5?
Yes, enharmonically identical. F#m7b5 appears in sharp keys; Gbm7b5 would appear in flat keys (rare). F#m7b5 is the common spelling.
What key is F#m7b5 the ii chord of?
F#m7b5 is the ii chord in E minor. The progression F#m7b5-B7-Em is the minor ii-V-i in E.
Why is F#m7b5 so accessible?
Three of four notes are white keys (A, C, E), and F# is easy to locate. The chord sits naturally under the hand, making it comfortable for voicing and voice-leading.