3.times do
  	play 60 + rand(10)
  	sleep 0.5
	end

if rand(1) < 0.5
 # if heads, play two ascending notes
  play 60
  sleep 0.5
  play 62
else
  # if tails, play three descending notes
  play 72
  sleep 0.25
  play 71
  sleep 0.25
  play 70
end