A#
Modes Scale
A# / B♭ Lydian
The 4th mode — major with a raised 4th. Dreamy, floating, ethereal.
Notes in A# Lydian
Bb1
C2
D3
E4
F5
G6
A7
Bb8
Chords in A# Lydian
7 diatonic chordsDegreeChordNotesQuality
IBbBb – D – Fmajor
IICC – E – Gmajor
iiiDmD – F – Aminor
ivE°E – G – Bbdiminished
VFF – A – Cmajor
viGmG – Bb – Dminor
viiAmA – C – Eminor
Other Scales in A#
MajorBb, C, D, Eb, F, G, ANatural MinorBb, C, Db, Eb, F, Gb, AbHarmonic MinorBb, C, Db, Eb, F, Gb, AMelodic MinorBb, C, Db, Eb, F, G, ADorianBb, C, Db, Eb, F, G, AbPhrygianBb, B, Db, Eb, F, Gb, AbMixolydianBb, C, D, Eb, F, G, AbLocrianBb, B, Db, Eb, E, Gb, AbMajor PentatonicBb, C, D, F, GMinor PentatonicBb, Db, Eb, F, AbBluesBb, Db, Eb, E, F, AbWhole ToneBb, C, D, E, Gb, AbDiminished (H-W)Bb, B, Db, D, E, F, G, AbDiminished (W-H)Bb, C, Db, Eb, E, Gb, G, APhrygian DominantBb, B, D, Eb, F, Gb, AbHungarian MinorBb, C, Db, E, F, Gb, ALydian DominantBb, C, D, E, F, G, Ab
Lydian in All 12 Keys
Practice by Ear
Chords in A# / Bb Lydian
The A# lydian scale contains the notes Bb, C, D, E, F, G, A. The 4th mode — major with a raised 4th. Dreamy, floating, ethereal.
The diatonic chords in A# lydian are Bb (I), C (II), Dm (iii), E° (iv), F (V), Gm (vi), Am (vii). These are the chords you can use when writing or improvising in this key — every note in each chord belongs to the A# lydian scale.
To develop your ear for the A# lydian sound, use the scale and chord trainers linked above. Being able to recognise these sounds by ear — not just read them from a chart — is what separates musicians who truly hear music from those who only read it.