“Rranding Ring Chains”, coded by Alex Enkerli, March 24, 2016. Playing with ring chains in Sonic Pi, using a previously-built script to play with “licks”. <https://gist.github.com/Enkerli/0687533338c5e40516fc> In several cases, the basic “lick” using degrees 3, 5, 1, and 4 of a given scale makes for intriguing combinations, once shuffled and cut…

spi_rranding_ring_chains.rb

# “Rranding Ring Chains”
# Coded by Alex Enkerli, March 24, 2016
# Playing with ring chains in Sonic Pi, using a previously-built script to play with “licks”. https://gist.github.com/Enkerli/0687533338c5e40516fc
# In several cases, the basic “lick” using degrees 3, 5, 1, and 4 of a given scale makes for intriguing combinations, once shuffled and cut apart.

def play_lick(lick, root, scale, time)
  spark lick
  lick.each{|note| play((degree_to_note note, root, scale)) ; sleep time }
end

DEGREES = {:i    => 0,
           :ii   => 1,
           :iii  => 2,
           :iv   => 3,
           :v    => 4,
           :vi   => 5,
           :vii  => 6,
           :viii => 7,
           :ix   => 8,
           :x    => 9,
           :xi   => 10,
           :xii  => 11,
           :r  => 999
           }
def degree_to_note(degree, tonic, scale)
  local_scale = Scale.new(tonic, scale)
  if degree.is_a?(Numeric) && degree==0
    return 0
  elsif idx = DEGREES[degree]
    index=idx
  elsif degree.is_a? Numeric
    index=degree - 1
  else
    raise InvalidDegreeError, "Invalid scale degree #{degree.inspect}, expecting #{DEGREES.keys.join ','} or a number"
  end
  local_scale.notes[index]
end


root=50
use_tuning :just, root+1
lick=(ring 3, :r, 5, 1, :r, 4)
scale=([:major, :whole_tone, :minor, :diminished, :lydian, :phrygian]).choose

live_loop :licking do
  use_synth :blade
  use_synth_defaults release: 0.1
  play_lick(lick.stretch(2).shuffle.reflect.drop(4).mirror, root, scale, rrand(0.09, 0.29))
  sleep 0.45
end
live_loop :beed do
  sample :bd_haus
  sleep 1.15
end
live_loop :bs do
  use_synth :fm
  use_synth_defaults release: 0.3
  route=40
  play_lick(lick.shuffle.drop(4).mirror, route, scale, 0.6)
  sleep 1.65
end