Who will hear the voice of a singer first: a person in the balcony 50.0 m away

Question:

Who will hear the voice of a singer first: a person in the balcony 50.0 m away from the stage (see Fig. 22-21), or a person 1200 km away at home whose ear is next to the radio listening to a live broadcast? Roughly how much sooner? Assume the microphone is a few centimeters from the singer and the temperature is 20°C.