lib/coltrane_instruments/guitar/note.rb in coltrane-2.0.0 vs lib/coltrane_instruments/guitar/note.rb in coltrane-2.1.0

@@ -1,8 +1,24 @@
 # frozen_string_literal: true
 
 module ColtraneInstruments
   module Guitar
     class Note
+      attr_reader :string, :fret
+
+      def initialize(string, fret = nil)
+        @string = string
+        @fret   = fret
+      end
+
+      def pitch
+        string + fret unless fret.nil?
+      end
+
+      def pitch_class
+        pitch.pitch_class unless fret.nil?
+      end
+
+      alias note pitch_class
     end
   end
 end