The B augmented chord contains B, D♯ and F𝄪 (F double sharp). Written Baug or B+, it raises the fifth of B major from F♯ to F𝄪. On the piano, F𝄪 uses the G key.
Build the B augmented chord with degrees 1–3–♯5. B to D♯ and D♯ to F𝄪 are both major thirds, four semitones apart. The double sharp raises F natural by two semitones; it raises B major’s F♯ fifth by one.
Preserve the written spelling F𝄪 even when it shares a piano key with a simpler enharmonic name.
Choose a position to keep the written notes, sounding keys, bass note, playback and print reference synchronized.
Select B, D♯ and G in the exercise. Its G key represents the sounding pitch F𝄪; the written reference continues to use the theoretical name. The check compares pitch classes, not the spelling printed on a physical keyboard.
Baug uses 1–3–♯5: B–D♯–F𝄪.
Compared with B major, raise the fifth by one semitone.
The chord tones stay the same while the lowest chord tone changes.
| Position | Symbol | Notes, low to high | Bass |
|---|---|---|---|
| Root position, current selection | Baug | B3–D♯4–F𝄪4 | B3 |
| First inversion | Baug/D♯ | D♯4–F𝄪4–B4 | D♯4 |
| Second inversion | Baug/F𝄪 | F𝄪4–B4–D♯5 | F𝄪4 |
The B augmented chord diagrams identify keys and note order, without prescribing fingers. Read F𝄪4 as the written pitch and use the G4 key. Root position and both inversions preserve all three chord tones while changing the bass.
Use the written notes, keyboard positions and playback without treating the diagram as a required hand shape.
Read left- and right-hand finger numbersOpen Music Theory
Supports: augmented triad formula and written tone spelling
Scope: Supports the chord formula and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
B, D♯ and F𝄪, with formula 1–3–♯5. F𝄪 means F double sharp and sounds on the same piano key as G.
The B augmented chord needs the letter F for its fifth. F♯ is the perfect fifth above B; raising it once more gives the augmented fifth F𝄪. G describes a different written interval.
No. B major contains B–D♯–F♯. Raise only F♯ by a semitone to make this augmented triad. Both keep the major third D♯.
D♯ starts the first inversion; F𝄪 starts the second. Select a position above and compare the low-to-high note list with the keyboard and sound.
Select the three pitch classes that make Baug, 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: B–D♯–F𝄪 · Formula: 1, 3, ♯5
Dots mark the notes to play. C4 is middle C. Numbers identify octaves, not fingers.