function applyToNotesInSelection(func) {
				var cursor = curScore.newCursor();
				//var selectionEnd = curScore.newCursor();
				var startStaff;
				var endStaff;
				var endTick;
				var fullScore = false;// so that not the hole score(paper) get a mark. 
				var s=false;
				cursor.rewind(1);
				if (!cursor.segment) { // no selection
					console.log("Nothing select!");
					s=false;
				} else { // else if select somthing
					startStaff = cursor.staffIdx;
					cursor.rewind(2);
					if (cursor.tick == 0) {

						// this happens when the selection includes
						// the last measure of the score.
						// rewind(2) goes behind the last segment (where
						// there's none) and sets tick=0
						endTick = cursor.lastSegment.tick + 1;
					} else {
						endTick = cursor.tick;
					}
					endStaff = cursor.staffIdx;
					console.log(startStaff + " - " + endStaff + " - " + endTick);
					s=true;
				}
				if(s==true) {
					for (var staff = startStaff; staff <= endStaff; staff++) {
						for (var voice = 0; voice < 4; voice++) {
							cursor.rewind(1); // sets voice to 0
							cursor.voice = voice;//voice has to be set after goTo
							cursor.staffIdx = staff;

							while (cursor.segment && cursor.tick < endTick) {
								if (cursor.element && cursor.element.type == Element.CHORD) {
									var graceChords = cursor.element.graceNotes;
									for (var i = 0; i < graceChords.length; i++) {
										// iterate through all grace chords
										var notes = graceChords[i].notes;
										func(note);
									}
									var notes = cursor.element.notes;
									for (var i = 0; i < notes.length; i++) {
										var note = notes[i];
										func(note);
									}
								}
								cursor.next();
							}
						}
					}
				} //end if (s==true)

			} //end applyToNotesInSelection