Reward board for music class. Make a pin for each classroom and clip it to their designated grade. On your whiteboard or chalkboard put the word MUSIC ( I use magnets). During the lesson if the class is too talkative, take a letter away. If the class keeps all the letters on the board at the end of lesson, they move two steps on their keyboard. 1-4 letters left is one step. No letters = no steps. When a class reaches the end of their keyboard, they earn a free music class.