The Alternating Step Tuning presents a unique and exploratory soundscape, moving each string in an intriguing pattern of two semitones up, then one semitone down, relative to standard EADGBe tuning. This creates an open chord that is rich, complex, and highly resonant, leaning towards extended major sonorities with a distinctive, bright character.

Technical Analysis: The open strings are tuned to F#3, G#3, E3, F#4, C#5, D#5. When strummed open, these notes collectively form an E Major 13th chord (E G# D# F# C#) with an F# in the bass. Specifically, the notes present are E (string 4), F# (string 6 and 3), G# (string 5), C# (string 2), and D# (string 1). This sophisticated voicing creates a sound that evokes a Lydian mode, known for its bright and ethereal quality. The lowest note present is E3, but the bass note of the full open chord is F#3, resulting in an Emaj13/F# sonority. The intermingling of the lower E string with the F# bass provides harmonic depth and an unexpected warmth.

The unique string intervals – a major second (F# to G#), a minor third down (G# to E), a major second up (E to F#), a perfect fifth (F# to C#), and a major second (C# to D#) across adjacent strings – lend themselves to interesting melodic and harmonic possibilities. Due to the high number of extended major chord tones, it becomes easier to discover related major 7th, 9th, and 13th voicings across the fretboard with minimal finger movement. Open string drones can be particularly effective, creating sustained, shimmering textures. This tuning would be excellent for atmospheric music, fingerstyle, or compositions requiring a bright, non-standard major sound. Experiment with chord shapes around the 2nd and 4th frets, as the open string relationships often make these accessible for extended chords.