F# Suspended 2nd Chord

Chord Tones: F# Suspended 2nd Chord

Symbol: sus2 — Formula: 1-2-5

DegreeNoteFrequency (A=440, Equal)
1 F# 369.994 Hz
2 G# 415.305 Hz
5 C# 277.183 Hz

Chord Notation

Notation TypeSymbol / Value
Lead Sheet SymbolF#sus2
All Common Symbolssus2
Interval Formula1-2-5
Harmonic Categoryopen

Roman numeral (e.g. I, IV, V) and Nashville Number notation are key-dependent. See Keys pages for chord function within specific keys.

Inversions

InversionNotes (low to high)Bass NoteSlash Notation
Root Position F# G# C# F# F# Suspended 2nd Chord
First Inversion G# C# F# G# F# Suspended 2nd Chord/G#
Second Inversion C# F# G# C# F# Suspended 2nd Chord/C#

Harmonic Function

The F# sus2 chord commonly functions as the tritone substitution in C major or tonic in F# major. Its harmonic role varies by key — in major keys it provides stable harmonic grounding.

The sus2 chord replaces the third with a major second, creating an open, ambiguous sound with no major or minor quality. It is widely used in rock and pop for its airy, unresolved character.

Common Progressions

The F# Suspended 2nd Chord frequently appears in these progression patterns (shown in Roman numeral notation relative to key):

Songs Featuring the Suspended 2nd Chord

Well-known songs where the F# Suspended 2nd Chord — or this chord type — plays a prominent role:

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

NoteEqual Temp.PythagoreanJust Intonation
F# 369.994 Hz 371.251 Hz 367.911 Hz
G# 415.305 Hz 417.657 Hz 418.601 Hz
C# 277.183 Hz 278.437 Hz 279.067 Hz

Scales Containing the F# Suspended 2nd Chord

These scales include the F# Suspended 2nd Chord as a diatonic or characteristic chord: