Rhythm ladder in Sonic Pi

rhythm_ladder.rb

use_bpm 100

live_loop :ladder do
  bars = 2
  no_of_beats = [1, 1.5, 2, 3, 4].map {|x|
    [x, (4 * x.to_f)*bars]
  }.flatten
  count = (knit *no_of_beats).tick
  
  sample :elec_tick
  sleep (1/count.to_f)
end

This if fun.
I put two ladders together with different map contents, and pan settings. Made one loop run twice as fast with 4 bars. Added some reverb and it's quite mesmerising!

  live_loop :rightdrum do
    use_bpm 100
    bars = 2
    #adjust map contents to taste
    no_of_beats = [1,1.5,3,2,3,2,3,1.5].map {|x|
      [x, (4 * x.to_f)*bars]
    }.flatten
    count = (knit *no_of_beats).tick
    puts "count1",count
    sample  :elec_flip,pan: 1
    sleep (1/count.to_f)
  end
  live_loop :leftdrum do
    use_bpm 200
    bars = 4
    #adjust map contents to taste
    #making the two maps different lengths allows progression
    no_of_beats = [2,1.5,0.5,1.5,2,1.5,0.5].map {|x|
      [x, (4 * x.to_f)*bars]
    }.flatten
    count = (knit *no_of_beats).tick
    puts "count2",count
    sample  :elec_flip,pan: -1
    sleep (1/count.to_f)
  end
end