code: public static Note getLowestNote(Note[] notes) {
  	  Note lowestNote = notes[0];
  	  for (int i=1; i<notes.length; i++)
  		  if (notes[i].isLowerThan(lowestNote))
  			  lowestNote = notes[i];
  	  return lowestNote;
    }
docs: Returns the lowest note from the given array of notes.
  @param notes An array of notes.
  @return The lowest note from the given array of notes.
  @see Note#isLowerThan(Note)