degrees for sonic-pi

gistfile1.rb

define :degrees do |degree,scale,root|
  the_degrees = {:i   => 1, :ii  => 2, :iii => 3,
                 :iv  => 4, :v   => 5, :vi  => 6,
                 :vii => 7, :_   => nil}

  intervals = Scale::SCALE[scale]
  intervals = intervals.cycle.take(the_degrees[degree]-1)
  note(root) + intervals.reduce(0,:+)
end

play degrees(:i, :major, :A3)
sleep 1
play degrees(:iii, :major, :A3)
sleep 1
play degrees(:v, :major, :A3)

sleep 1
play degrees(:i, :minor, :A3)
sleep 1
play degrees(:ii, :minor, :A3)
sleep 1
play degrees(:iii, :minor, :A3)