Chord Detail
F♯ Add 9 Chord
F#add9 is a F# add 9 chord — a major triad with the ninth added without a seventh. Lush and modern, it gives the brightness and color of an extension without the sophistication of a seventh chord.
The add 9 chord adds the major ninth (14 semitones = an octave plus a major second) to a major triad, without including the seventh. F#add9 uses F#, Bb, C#, Ab. The ninth (Ab) sits a ninth above the root (an octave plus a major second), giving it more spread and openness than the add2. Because there is no seventh, the chord keeps the clear, bright quality of a major triad while gaining the lushness of a color tone. This makes it extremely popular in contemporary styles that want the sound of modern harmony without the complexity of full seventh-chord jazz writing. In R&B, gospel, and contemporary worship, the add9 often appears as the IV or I chord for a modern, airy texture.
Formula: 1 – 3 – 5 – 9
1Root0 semitones3Major Third4 semitones5Perfect Fifth7 semitones9Major Ninth14 semitonesLush, open, modern, and colorful — a major triad with an added ninth for contemporary brightness.
Major chords are the bright foundation of Western harmony — stable, resolved, and immediately recognizable. Their structure (root, major third, perfect fifth) creates a sound that feels complete and confident, like a musical declaration of "yes."
🌿 Other bright sounds to explore
The ninth sits an octave above the second, so voice it high in the right hand for clarity. Typical voicing: root in the left hand, third–fifth–ninth in the right. The ninth can be doubled at the octave for a fuller sound. Unlike the add2, the add9 has more spread and sounds bigger.
Iadd9 – IVadd9 – V – I (Contemporary uplift)IVadd9 – V7sus4 – Imaj7 (Worship movement)IIadd9 – V9 – Imaj7 (Neo-soul approach)VIadd9 – IV – V – Iadd9 (Pop loop)Connect your MIDI keyboard and play this chord — ChordBeam identifies it instantly