A# Iwato Guitar Scale
Guitar scale in Drop D tuning — fretboard diagram
A# Iwato in Drop D — Notes and Intervals
The A# Iwato scale is a dark and brooding Japanese pentatonic scale. On Guitar, its notes are A#, B, D#, E, G#. It is essentially a pentatonic Locrian mode, known for its unstable and mysterious character, often used to depict shadows or deep contemplation. Commonly used in Japanese, Metal, Dark Ambient, Experimental. Notable players include Marty Friedman, Meshuggah. Use over diminished or m7b5 chords. Excellent for dark ambient textures and metal riffs with an Eastern edge.
Notes: A#, B, D#, E, G#
Intervals: 1P, 2m, 4P, 5d, 7m
Degrees: 1 b2 3 4 b5
Formula: H-4-H-4-W
Number of notes: 5
Tuning: Drop D (D-A-D-G-B-E)
About Drop D Tuning
Drop D tuning lowers the 6th string from E to D, giving you instant access to heavy power chords with a single finger. This deceptively simple change opens up a world of heavier riffs, deeper bass notes, and new chord voicings that are impossible in standard tuning. The low D string creates a powerful foundation for rhythm playing while keeping the rest of the fretboard familiar.
Drop D is one of the most versatile alternate tunings in modern music. From the crunchy riffs of grunge and alternative rock to the thunderous breakdowns of metal, this tuning has shaped the sound of countless iconic songs. It's also surprisingly useful for fingerpicking and acoustic arrangements where you need a deep bass drone.
Notable artists: Foo Fighters, Soundgarden, Rage Against the Machine, Tool, Killswitch Engage
Best for: Power chords, heavy riffs, drop-tuned metal rhythm, and acoustic arrangements with a deep bass drone
Musical Character
The darkest Japanese pentatonic — essentially a pentatonic Locrian. Its unstable b5 creates a shadowy, contemplative quality unlike any other pentatonic scale.