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An exercise in randomly generated "Radiohead chord" sequences
# Ben Levin's "Radiohead Chord Generator" video:
# https://www.youtube.com/watch?v=iYU_2hfFPM0
# Rules:
#
# From a MAJOR chord (e.g. C), you can:
# - move to the parallel minor (Cm)
# - move down to the relative minor (Am)
# - move up 1/2 step to a minor chord (Dbm)
# From a MINOR chord (e.g. Cm), you can:
# - move to the parallel major (C)
# - move up to the relative major (Eb)
# - move down 1/2 step to a major chord (B)
# Exercise:
# - randomly generate the starting chord
# - randomly generate 7 numbers from 1-3 inclusive
# - let the 7 numbers determine the path to take
# - boom, radiohead chord progression
(tempo! 90)
guitar:
[
# progression 1
[
# Gm - Gb - Ebm - Eb
o3 g2/>d/g/b-/>d | o3 g-/>d-/g-/b-/>d- |
o3 e-/b-/>e-/g-/b- | o3 e-/b-/>e-/g/b- |
# Cm - B - Bm - D
o3 c/g/>c/e-/g | o2 b/>f+/b/>d+/f+ |
o2 b/>f+/b/>d/f+ | o3 d/a/>d/f+/a |
] *2
# progression 2
[
# Eb - Em - G - Em
o3 e-/b-/>e-/g/b- | o3 e/b/>e/g/b |
o3 g/>d/g/b/>d | o3 e/b/>e/g/b |
# Eb - Em - E - Fm
o3 e-/b-/>e-/g/b- | o3 e/b/>e/g/b |
o3 e/b/>e/g+/b | o3 f/>c/f/a-/>c |
] *2
] *2
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