Electronic disco beat

coffeecookiecrumble.rb

#| electro-disco (4/4)
use_bpm 100
note_value = 0.5 # eighth notes
beats = 8
# beat on/off patterns
hh = spread(8, beats) # hit every beat
sn = spread(2, beats).rotate(-2) # hit 2nd and 4th beat
b = spread(1, beats) # hit 1st and 2nd beat
bd1 = spread(1, 4) * 2 # custom for bass drum
bd2 = spread(1, 8 * 2).rotate(1)  # custom for bass drum
sb = spread(1, beats * 2).reverse # hit once every 2 bars
# main beat
with_fx :reverb, room: 0.6 do
  live_loop :disco_beat do
    beats.times do
      if bd1.tick
        sample :bd_haus
        with_synth :tri do
          play 30, amp: 0
        end
      end
      if sb.look
        with_synth :tri do
          play 37, amp: 0
        end
      end
      if bd2.look
        2.times do
          sleep note_value / 2
          sample :bd_haus, amp: 0.25
        end
        ##| sleep note_value
      elsif sn.look
        ##| sample :sn_dub, attack: 0, release: 2, amp: 0.0125
        ##| sample :sn_dolf, attack: 0, release: 0.25
        ##| sample :perc_snap, rate: 1, amp: 0.25
        ##| sample :perc_snap2, rate: 1, amp: 0.25
        sleep note_value
      else
        sleep note_value
      end
    end
  end
end
# pizzaz
with_fx :reverb, room: 0.8 do
  live_loop :cymbals do
    if spread(7, beats).tick
      sample :drum_cymbal_closed, attack: 0, amp: 0
    end
    if spread(6, beats).look
      sample :drum_cymbal_hard, attack: 0, amp: 0
    end
    sample :drum_cymbal_closed, attack: (ring 0, 0.005).look, amp: (range 0.25, 1, step: 0.125).look
    sleep (note_value / 2)
  end
end

# synths
with_fx :reverb, room: 0.8 do
  live_loop :synths do
    with_synth :saw do
      if spread(7, beats).tick
        ##| play 22, attack: 0, amp: 8, release: 0.125
        play 30, attack: 0, amp: 0, release: 0.125
        ##| play 37, attack: 0, amp: 1, release: 0.125
        play 42, attack: 0, amp: 0, release: 0.125
      end
      with_fx :flanger, phase: 1, delay: 4, wave: 1 do
        if spread(1, beats).look
          play 42, attack: 1, amp: 0, release: 0.125
          ##| play 61, attack: 1, amp: 0.8, release: 0.125
          ##| play 66, attack: 1, amp: 0.8, release: 0.125
          ##| play 71, attack: 1, amp: 0.8, release: 0.125
          ##| play 75, attack: 1, amp: 0.8, release: 0.125
          ##| play 78, attack: 4, amp: 0.1, release: 4
          ##| play 80, attack: 1, amp: 0.8, release: 0.125
          ##| play 85, attack: 4, amp: 0.01, release: 4
          ##| play 90, attack: 1, amp: 0.8, release: 0.125
          ##| play 97, attack: 1, amp: 0.8, release: 0.125
        end
      end
      sleep (note_value / 2)
    end
  end
end


# the occassional shaker
with_fx :reverb, room: 0.9 do
  live_loop :shaker2 do
    if (spread 1, beats * 4).tick
      4.times do
        # source for sample of shaker: https://samplefocus.com/samples/percussive-shaker
        sample "~/Downloads/percussive-shaker.wav", amp: 3, rate: 1, pan: [0.5, -0.5].tick
        sleep note_value / 2
      end
    else
      sleep note_value * 2
    end
  end
end