code: public static Music transformDecorations(Music music) {
  		Music ret = new Music();
  		KeySignature tuneKey = null;
  		KeySignature currentKey = null;
  		Hashtable partsKey = new Hashtable();
  		MusicElement element;
          for (Object o : music.getFirstVoice()) {
              element = (MusicElement) o;
  
          }
  		return music;
  	}
docs: Transform tills, mordants, grupetto, arpeggio, staccato
  into multiple notes (and rests).
  
  e.g. +trill+C2 will be transformed into DCDC
  
  @return the Music object which contents has been changed