Sonic Pi Live Jam

sonic-pi-live-jam-2025-08-24.rb

use_bpm 112
use_cue_logging false
use_debug false
use_real_time

# Section length in bars
section_duration = 32
total_sections = 6
reset_tick = section_duration * total_sections

# Instruments
kick = :bd_haus
snare = :sn_dub
hat = :drum_cymbal_closed

# Master Clock – every bar
live_loop :clock do
  sleep 1
end

# === SECTION MARKER ===
live_loop :structure, sync: :clock do
  tick
  set :look, look
  print(look)
  case look
  when 0
    puts "== INTRO =="
  when section_duration * 1
    puts "== BUILD =="
  when section_duration * 2
    puts "== BREAK =="
  when section_duration * 3
    puts "== DROP =="
  when section_duration * 4
    puts "== RELEASE =="
  when section_duration * 5
    puts "== OUTRO =="
  end
  sleep 1
  
  if look >= reset_tick
    tick_reset
  end
end

# Section arrangement by instruments

arrangement = {
  kick:  [0, 1, 1, 0, 1, 1], # enters after intro, drops out in Drop
  snare: [0, 0, 1, 1, 1, 0],
  hat:   [0, 1, 1, 1, 1, 0]
}

define :section_on? do |inst|
  section = get(:look) / section_duration
  arrangement[inst][section] == 1
end

swing = [0, 0.03].ring

# Master FX
with_fx :reverb, mix: 0.4 do
  with_fx :echo, phase: 0.75, mix: 0.2 do
    
    # Kick
    live_loop :kick, sync: :clock do
      with_fx :lpf, cutoff: 60 do
        sample kick, start: rrand(0.2, 0.3), finish: rrand(0.8, 0.9), amp: 1 if section_on?(:kick)
      end
      sleep 1
    end
    
    # Hat
    live_loop :hat, sync: :clock do
      with_fx :lpf, cutoff: 80 do
        sleep 0.5 + swing.tick(:hat_swing)
        sample hat, start: rrand(0, 0.05), finish: rrand(0.9, 1),
          amp: (spread 5,9)[get(:look)], attack: 0.3, sustain: 0.6 ? 0.6 : 0.3 if section_on?(:hat)
        sleep 0.5
      end
    end
    
    # Snare
    live_loop :snare, sync: :clock do
      sleep 1
      if section_on?(:snare)
        with_fx :lpf, cutoff: 80 do
          sample snare, start: rrand(0, 0.05), finish: rrand(0.9, 1), amp: 0.7, attack: 0.2, sustain: 0.7, decay: 0.5 if (spread 2,4)[get(:look)]
          ##| sample :vinyl_backspin, amp: 0.5, clamp_time: 0.8
          sample [:vinyl_backspin, :vinyl_hiss, :vinyl_scratch].choose, clamp_time: 0.8, amp: 0.1 if spread(1, 4)[get(:look)]
        end
        with_fx :lpf, cutoff: 50 do
          sample :loop_amen, beat_stretch: 0.75, rate: 4, amp: 0.3
        end
      end
      
      sleep 1
    end
    
    # INTRO
    live_loop :intro, sync: :clock do
      if get(:look) <= section_duration
        with_fx :lpf, cutoff: 50 do
          use_synth :prophet
          play [:c2, :e2, :g2].choose, sustain: 0.4, release: 0.3, amp: 0.8
          ##| sample [:mehackit_phone1, :mehackit_robot5].choose, amp: 0.5, clamp_time: 2 if one_in 3
          
          with_fx :reverb, mix: 0.4 do
            # Slow filter open
            cutoff = line(50, 100, steps: 26).tick(:cut)
            with_fx :lpf, cutoff: cutoff do
              play chord(:c3, :minor7), release: 2, amp: 0.4
            end
          end
          sample :drum_cymbal_closed, amp: 0.3 if (spread 3, 16)[tick]
          sample :drum_splash_soft, amp: 0.5, start: 0.8, finish: 0.1 if (spread 1,10).tick
          
          sleep 0.5
        end
      else
        sleep 1
      end
    end
    
    # BUILD
    live_loop :build, sync: :clock do
      if section_duration < get(:look) and get(:look) <= section_duration * 2
        use_synth :hollow
        play :c2, attack: 1, release: 4, amp: 0.2
        ##| sample :ride_via, attack: 0.2, sustain: 0.6 if one_in 4
        sample :tbd_highkey_c4, attack: 0.3, sustain: 0.4 if one_in 3
        
        cutoff_val = line(30, 60, steps: 32).tick(:cut)
        with_fx :lpf, cutoff: cutoff_val do
          play :g2, attack: 0.1, release: 0.5, amp: 0.4
        end
        sleep 2
        
        cutoff_val = line(20, 60, steps: 16).tick(:cut)
        with_fx :lpf, cutoff: cutoff_val do
          play :d2, attack: 0.1, release: 0.4, amp: 0.5
        end
        sleep 2
      else
        sleep 1
      end
    end
    
    # BREAK
    live_loop :break, sync: :clock do
      if section_duration * 2 < get(:look) and get(:look) <= section_duration * 3
        use_synth :dark_ambience
        play [:c3, :d3, :e4], attack: 1, release: 4, amp: 0.4
        with_fx :rlpf, cutoff: line(80, 40, steps: 24).tick(:filter) do
          sample kick
          
          sample :ambi_choir, rate: 0.6, amp: 0.2 if one_in(4)
          
          sample :perc_snap, amp: 0.3, start: rrand(0, 0.05), finish: rrand(0.9, 0.95) if (spread 1,8)[get(:look)]
        end
        
        sleep 4
      else
        sleep 1
      end
    end
    
    # DROP
    live_loop :drop, sync: :clock do
      if section_duration * 3 < get(:look) and get(:look) <= section_duration * 4
        use_synth :tb303
        ##| sample :sn_dolf, attack: 0.5, release: 0.8, amp: 0.5
        play [:c3, :e5], attack: 1, release: 4, amp: 0.2
        with_fx :lpf, cutoff: 40 do
          play_pattern_timed [:c2, :d3, :g2, :b3], [0.5, 0.5, 0.5, 0.5], release: 0.3, cutoff: rrand(70, 130), amp: 0.3
          sleep rrand(1.8, 2.2)
        end
        
        sample :bd_haus, amp: 0.3
        sleep rrand(0.4, 0.6)
        ##| sample :sn_dub, amp: 0.4
        ##| sleep rrand(0.4, 0.6)
      else
        sleep 1
      end
    end
    
    # RELEASE
    live_loop :release, sync: :clock do
      if section_duration * 4 < get(:look) and get(:look) <= section_duration * 5
        use_synth :hollow
        play [:c3, :e3], attack: 0.3, release: 4, sustain: 2, amp: 0.4
        ##| sample :ride_tri, attack: 0.2, sustain: 0.6 if one_in 4
        sleep rrand(2.9, 3.1)
        
        with_fx :hpf, cutoff: 120, mix: 0.4 do
          sample :bd_haus, amp: 1
          sleep rrand(0.4, 0.6)
          sample :drum_cymbal_soft, amp: 0.3 if (spread 3,8).tick
          sleep rrand(0.3, 0.7)
        end
      else
        sleep 1
      end
    end
    
    # Outro Cut
    live_loop :outro, sync: :clock do
      if get(:look) > section_duration * 5
        sleep 0.8
        if (spread 2, 8)[get(:look)]
          sample snare, amp: 0.5
          ##| sample :loop_tabla, attack: 0.6, release: 0.5, clamp_time: 0.5 if spread(1, 7)[get(:look)]
        end
        
        use_synth :fm
        play [:c2, :g2].choose, attack: 0.2, sustain: 0.5, amp: 0.4
      else
        sleep 1
      end
    end
  end
end