The Fsus4 chord contains F, B♭ and C. Also written Fsus, it uses formula 1–4–5. B♭ replaces A, the third of F major; compare root position and two inversions.
Build the Fsus4 chord by retaining F and C from F major and replacing A with B♭. F–B♭ spans five semitones and F–C seven. A natural and A♭ are both absent, leaving a perfect fourth rather than a major or minor third.
Preserve the written note spelling shown for this chord.
Choose a position to keep the written notes, sounding keys, bass note, playback and print reference synchronized.
Build the Fsus4 chord with F, B♭ and C. G instead of B♭ gives Fsus2; A gives F major. The exercise checks three pitch classes without prescribing their octave placement, identifying an inversion from click order or measuring live playing.
Fsus4 uses 1–4–5: F–B♭–C.
Compared with F major, replace the third with the fourth.
The chord tones stay the same while the lowest chord tone changes.
| Position | Symbol | Notes, low to high | Bass |
|---|---|---|---|
| Root position, current selection | Fsus4 | F4–B♭4–C5 | F4 |
| First inversion | Fsus4/B♭ | B♭4–C5–F5 | B♭4 |
| Second inversion | Fsus4/C | C5–F5–B♭5 | C5 |
The Fsus4 chord diagrams identify notes and registers without assigned fingers. B♭ begins the first inversion and C the second. Read the flat on B in each position; the selected bass and octave labels specify the example rather than a required hand shape.
Use the written notes, keyboard positions and playback without treating the diagram as a required hand shape.
Read left- and right-hand finger numbersPianoChord.org
Supports: sus4 chord formula and written tone pattern
Scope: Supports the chord formula and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
F, B♭ and C: root, perfect fourth and perfect fifth. B♭ is the suspended fourth, not B natural.
No. B♭ replaces the A of F major. The suspended collection therefore contains neither A natural nor A♭.
The Fsus4 chord uses B♭, the fourth above F. Fsus2 uses G, the second. Both retain F and C and omit the third.
Moving B♭ down to A changes the Fsus4 chord to F major. That is a useful sound comparison; whether a resolution occurs depends on the surrounding music.
Select the three pitch classes that make Fsus4, then check your answer.
This one-octave exercise checks pitch classes. Order and octave do not affect the result; fingering and live performance are not assessed.
One octave, C through B. Select a key again to remove it.
Chord tones: F–B♭–C · Formula: 1, 4, 5
Dots mark the notes to play. C4 is middle C. Numbers identify octaves, not fingers.