Hajime Sueyoshi hzm-s

## 1_before_karaoke_machine.rb
class KaraokeMachine

  def initialize(melody_string)
    @melody = Melody.parse(melody_string)
  end

  def transpose(amount)
    @melody.transpose(amount).present
  end
end
	class KaraokeMachine

	def initialize(melody_string)
	@melody = Melody.parse(melody_string)
	end

	def transpose(amount)
	@melody.transpose(amount).present
	end
	end