Harmonizer#samples does its own work

lib/music_theory/harmonize.rb

@@ -3,21 +3,24 @@
 module MusicTheory
  class Harmonize
  include MusicTheory::Output
- attr_accessor :samples
 
  def initialize(*things_to_flatten)
- max_sample_array_length = things_to_flatten.map(&:length).max
+ @things_to_flatten = things_to_flatten
+ end
+
+ def samples
+ max_sample_array_length = @things_to_flatten.map(&:length).max
  @samples = Array.new(max_sample_array_length, 0)
 
- things_to_flatten.each do |group|
+ @things_to_flatten.each do |group|
  group.each_with_index do |value, i|
  @samples[i] += value
  end
  end
 
-  max = @samples.map {|s| s.abs }.max
-  multiplier = 1.0 / max
-  @samples.map!{ |s| multiplier * s }
+ max = @samples.map {|s| s.abs }.max
+ multiplier = 1.0 / max
+ @samples.map!{ |s| multiplier * s }
  end
  end
 end