code: public Music getMusic() {
  		if (m_multiPartsDef == null) {
  			if (m_parts == null) //no part at all
  				return (m_defaultPart.getMusic());
  			else //ah, they are some parts, but no part order
  				//return the same thing than graphical rendition
  				//parts in alphabetic order
  				return getMusicForGraphicalRendition();
  		}
  		else {
  			Music globalScore = newMusic();
  			globalScore.append(m_defaultPart.getMusic());
  			Part[] parts = m_multiPartsDef.toPartsArray();
              for (Part part : parts) {
                  globalScore.append(part.getMusic());
              }
  			return globalScore;
  		}
  	}
docs: Returns the music of this tune, in a raw form.
  This is half-way between graphical rendition and audio
  rendition.
  
  Parts order is expanded. And that's all.
  e.g. the parts order is ABAB, you'll get :
  <ul>
  <li>the default part, if any before "A"
  <li>A
  <li>B
  <li>A
  <li>B
  </ul>
  If there is no part, it's simple, it returns the "default"
  part.
  If you want to retrieve the music related to each part separatly
  see {@link #getPart(String)}.{@link Part#getMusic() getMusic()}.
  
  This is not desired for printing and graphic output.
  But this is a beginning for audio output.
  In your audio converter you'll have to manage all bar
  repeats, decorations rendering... or you could use
  {@link #getMusicForAudioRendition()} which does this
  task for you.
  
  @see #getMusicForGraphicalRendition()
  @see #getMusicForAudioRendition()
  @see #getPart(String)
  @return The music part of this tune. If this tune isn't composed of
  several parts this method returns the "normal" music part. If
  this tune is composed of several parts the returned music is
  generated so that the tune looks like a "single-part" one.