<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def play_tune(self, tune):
        '''Play a tune on the vehicle'''
        msg = self.message_factory.play_tune_encode(0, 0, tune)
        self.send_mavlink(msg)