A# Lydian Mode

What is the A# Lydian Mode?

Lydian is the fourth mode of the major scale, distinguished by its raised 4th degree (#4) which creates a dreamy, floating sensation that sounds like the major scale but brighter. You'll hear it in film scores, Steve Vai solos, and Joe Satriani's melodic work — any time a composer wants to evoke wonder or weightlessness. Here's how the A# Lydian Mode lays out on the fretboard. This scale is enharmonically equivalent to Bb Lydian.

Notes and Positions

The fourth mode - dreamy major with raised 4th. Very bright. On guitar, you can treat this as both a lead vocabulary and a way to see chord tones inside common shapes. Start with one box, then connect it to the nearest root on the next string set. In the key of A#, the notes are: A#, B#, C##, D##, E#, F##, G##.

How to Use It

You'll often hear it in Film Scores, Jazz, and Progressive Rock. A good way to internalize the sound is to sing the root, then sing a few scale degrees before you play them.

Start by playing one position slowly and saying the note names or degrees out loud. Use the interactive fretboard above to spot repeats of the same note on different strings and frets.