By accident, I stumbled on the YouTube channel “Fredneck” of the guitarist of a fusion jazz cover band named General Zod. In the following video, they offer a worthy tribute to one of my all-time classics in the genre, “Meeting of the Spirits” by the Mahavishnu Orchestra.
The intro (which is a bit distorted on my CD of the original) begins with a rather strange chord progression based on minor-major chords: C#add#9 — Dadd#9/C# — C#add#9 (another voicing) — Cmadd#9/B — C#9#11/G — F/E — G/F — G/A — F/G.
The main section is a modal 6:4 jam in the F# Phrygian mode (i.e. the 3rd mode of the D major scale). The riff is a based on arpeggiating a mutant version of the familiar Phrygian i-IImaj7 progression: F#m is “jazzed up” to F#b9 without the 3rd (the individual notes are F#2 F#3 C#4 G3 E4) and Gmaj7 is spiced up to. Gmaj7b5add6 (individual notes G2 F#3 C#4 B3 E4). In a 6:4 meter, the arpeggiation follows a 5-5-2 pattern. The repeated riff is most easily played using the thumb to fret the bass note.
The “spirits” that meet are guitar, keys, and violin. I literally never tire of this progression for jamming over. Enjoy!