updated html and js files for song generation

index.html

@@ -68,10 +68,13 @@
     <script src="js/song_generator/midiTrackEventType.js"></script>
     <script src="js/song_generator/midiFile.js"></script>
     <script src="js/song_generator/melodic_fluency.js"></script>
+    <script src="js/song_generator/chord_progression.js"></script>
+    <script src="js/song_generator/sequence.js"></script>
     <script src="js/song_generator/counterpoint_1_1.js"></script>
     <script src="js/song_generator/counterpoint_2_1.js"></script>
     <script src="js/song_generator/counterpoint_3_1.js"></script>
     <script src="js/song_generator/counterpoint_4_1.js"></script>
+    <script src="js/song_generator/counterpoint_4th_spec.js"></script>
     <script src="js/song_generator/song_generator.js"></script>
 
     <!-- scale keyboard -->
@@ -413,7 +416,7 @@ <h3 id="welcome_subtitle" style="font-size: 18px;">Welcome to the Music Toolbox<
         <select name="song_generator_scale" id="song_generator_scale"></select>
         <br/><br/>
         <span id="song_generator_nb_bars_text">Nb. of bars:</span>
-        <input type="number" id="song_generator_nb_bars" min="1" max="21" style="width: 35px;" value="9"/>
+        <input type="number" id="song_generator_nb_bars" min="1" max="21" style="width: 35px;" value="4"/>
         &nbsp;
         <span id="song_generator_nb_notes_per_bar_text">Nb. of notes/bar:</span>
         <input type="number" id="song_generator_nb_notes_per_bar" min="1" max="64" style="width: 35px;" value="8"/>