     func turnOffHeldKeys() {
         updateAllKeysToUpPosition()
         
-        for note in midiNotesHeld {
+        for note in 21...108 {
             conductor.core.stopNote(note)
         }
     

        
        if holdMode && monoMode {
           toggleMonoKeyHeld(key)

        } else if holdMode && !monoMode {
            toggleKeyHeld(key)
            
        } else {
            turnOffKey(key)
        }
        
        lastKey = key
    }
    
    // *********************************************************

    @IBAction func keyPressed(sender: UIButton) {
        let key = sender
        
        // Turn off last key press in Mono
        if monoMode {
            if let lastKey = lastKey {
                turnOffKey(lastKey)
            }
        }
        
        // Toggle key if in Hold mode
        if holdMode {
            if midiNotesHeld.contains(midiNoteFromTag(key.tag)) {
                turnOffKey(key)
