B♭ Altered
All four altered tensions — ♭9 ♯9 ♯11 ♭13 — over a dominant 7th. The 7th mode of melodic minor.
Playback sounds a minor 3rd below the written notation — the instrument's concert (sounding) pitch.
Audio source: tonejs-instruments by Nick Brosowsky (MIT)
What notes are in the B♭ Altered scale?
The B♭ Altered scale uses the notes B♭, C♭, D♭, E𝄫, F♭, G♭, A♭ (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 B♭ to get the B♭ Altered scale.
What chords work over B♭ 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 B♭ Altered on Clarinet in A?
On woodwinds, scales train fingering coordination + breath support + register changes. Pay particular attention to the break (the register-key transition); slow practice with a tuner reveals intonation issues across the break.
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.