C𝄪 Altered
All four altered tensions — ♭9 ♯9 ♯11 ♭13 — over a dominant 7th. The 7th mode of melodic minor.
Playback sounds a perfect 5th below the written notation — the instrument's concert (sounding) pitch.
Audio source: FluidR3_GM SoundFont (public domain)
What notes are in the C𝄪 Altered scale?
The C𝄪 Altered scale uses the notes C𝄪, D♯, E♯, F♯, G♯, A♯, B♯ (one octave; the pattern repeats at higher registers).
What's the Altered scale formula?
The Altered scale follows the interval pattern H W H W W W W, where W = whole step (2 semitones) and H = half step (1 semitone). Apply that pattern starting on C𝄪 to get the C𝄪 Altered scale.
What chords work over C𝄪 Altered?
Altered works over V7alt — ♭9, ♯9, ♯11, ♭13. The 7th mode of melodic minor; resolves down a half step to the I chord.
How do I finger C𝄪 Altered on French Horn?
On brass, scales train embouchure + valve / slide coordination across the partials. Slow practice with a tuner reveals intonation tendencies (e.g., the 5th partial sharp on trumpet).
When would I use the Altered scale?
All four altered tensions — ♭9 ♯9 ♯11 ♭13 — over a dominant 7th. The 7th mode of melodic minor.