     override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
             // when user touches a button, turn it light blue
 
-        for touch: AnyObject in touches {
+        for touch in touches {
             let location = touch.locationInNode(self)
 
-            let nodes = self.nodesAtPoint(location) as [SKNode]
+            let nodes = nodesAtPoint(location) as [SKNode]
 
             for node in nodes {
                 if let name = node.name {
                     if name.containsString("noteButton") {
                         // if it's a noteButton....
 
-                        handleNoteStart(node.name!)
+                        handleNoteStart(name)
                         let spriteNode = node as! SKSpriteNode
 
                         let changeColorAction = SKAction.colorizeWithColor(minimalLightBlue, colorBlendFactor: 1.0, duration: 0)

                            spriteNode.color = self.minimalLightPurple
                        }
                    }
                }
            }
        }
    }


                        spriteNode.runAction(changeColorAction) {
                            spriteNode.color = self.minimalPurple
                        }
                    }
                    updateSynthNote()
                }
            }
        }
