A# Locrian #2 Guitar Scale
Guitar scale in 7-string tuning — fretboard diagram
A# Locrian #2 in 7-string — Notes and Intervals
The A# Locrian #2 scale is a more usable and consonant version of the standard Locrian mode. On Guitar, it contains the notes A#, C, C#, D#, E, F#, G#. It is the preferred choice for jazz musicians soloing over half-diminished chords, as its natural second degree allows for much smoother and more melodic voice leading. Commonly used in Jazz, Post-Bop, Contemporary. Notable players include John Coltrane, Woody Shaw, Steve Coleman. Use over m7b5 chords. The preferred jazz choice over half-diminished chords (vs standard Locrian which sounds too harsh).
Notes: A#, C, C#, D#, E, F#, G#
Intervals: 1P, 2M, 3m, 4P, 5d, 6m, 7m
Degrees: 1 2 b3 4 5 b6 b7
Formula: W-H-W-H-W-W-W
Number of notes: 7
Tuning: 7-string (B-E-A-D-G-B-E)
Also known as: half-diminished, aeolian b5
About 7-string Tuning
The 7-string guitar adds a low B string below the standard 6-string tuning (B-E-A-D-G-B-E), extending the instrument's range into bass territory. This extra low end has become essential in progressive metal, djent, and modern heavy music, enabling crushing low-end riffs while maintaining access to standard guitar voicings on the upper strings.
Pioneered by jazz guitarist George Van Eps and later brought into the metal mainstream by Steve Vai and Korn, the 7-string guitar has become a staple of modern heavy music. Players like Tosin Abasi, Misha Mansoor, and John Petrucci have pushed the instrument's capabilities into new territory, using the extended range for complex harmonic progressions, polyrhythmic riffs, and sweeping arpeggios that span an enormous tonal range.
Notable artists: Dream Theater, Periphery, Animals as Leaders, Korn, Meshuggah
Best for: Progressive metal riffs, extended-range chord voicings, djent rhythms, and jazz fusion harmony
Musical Character
The natural 2nd degree (vs b2 in standard Locrian) makes this vastly more usable — smoother voice leading while retaining the essential b5 for half-diminished harmony.