Substitute

It wouldn’t occur to many of us to play a Cmaj7 like this through a distorted amp, but that’s exactly what Alex did on Jacob’s Ladder, allowing the open first and second strings to ring while forming this jazz-type voicing using the lower four strings. We’ve jumped in at an advanced level here rather than moving open chords around, but why not?

The unusual stacking of notes in this Cadd9 is what you get if you move an open G chord from the 3rd to the 8th fret. If you’ve ever heard La Villa Strangiato, this will be familiar to you. It also appears in Moving by Supergrass and The Pretenders’ 2000 Miles.

This Gmaj7 is similar to Example 1 but makes use of the open third string, setting a root note directly against the major 7th for a pretty chord but with a certain dissonance. This features heavily on Cygnus X-1 Book II as both a powerchord and delicate arpeggio, as does Example 4…

This complex, dissonant chord features alongside Example 3 on the Hemispheres album and is probably most accurately

F#7b described as an 9sus4. In practice, it’s a sparse fingering of something like an F#m7 with extra open strings. Alex had cited Paco De Lucía as an influence – not surprising hearing this flamenco-type chord.

The ‘Hemispheres’ chord: fast catching up with the ‘Hendrix’ chord (E7#9) in legendary status! Alex has used this F#7add11 and ‘openyet-barre-chord’ approach in many keys/’board positions, but the first repeated chord of the Hemispheres album is the ultimate example. Try leaving the third string open and moving the shape around for further Rush-isms.