piano scale
B♭ Lydian dominant
B♭1C2D3E♯4F5G6A♭♭7
Raised fourth and flattened seventh at once — the fourth mode of melodic minor.
The same sounds spelled from the other side are A♯ Lydian dominant.
Written out
Every accidental is written in, rather than left to a key signature, so the letters can be read one at a time.
The step pattern
B♭WCWDWEHFWGHA♭WB♭
What is true of it
B♭ Lydian dominant is B♭, C, D, E, F, G and A♭, and back to B♭.
Its steps are W – W – W – H – W – H – W, where W is a whole step and H a half.
On the same tonic, B♭ Lydian differs from it by exactly one note.
Chords made only of these notes
CmajorCaugaugmentedC7dominant seventhDdimdiminishedDm7♭5half-diminished seventhEdimdiminishedEaugaugmentedEm7♭5half-diminished seventh
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on B♭
B♭ Phrygian dominantexoticB♭ alteredexoticB♭ double harmonicexoticB♭ majormajorB♭ natural minorminorB♭ harmonic minorminor
C lyd domC♯ lyd domD♭ lyd domD lyd domD♯ lyd domE♭ lyd domE lyd domF lyd domall 374