Here is a small fragment of music by Estonian composer Arvo Pärt, the first four measures of “Piano Sonatine Op.1 No.2 – Larghetto.” The piece was written in the late 1950s, but when played on guitar strikes me as something Robert Fripp would throw into a late period King Crimson tune.
The chords are evolving mutations of C5 and could be interpreted as C5, C5 add b9, C6 add b9, (which also feels like an allusion to A7#9), Cmaj9.
Oh yeah—this is transcribed an octave higher than written. If you have a 7-string guitar try this in the 1st position.
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