Abstract: The present invention is a communication system that allows simultaneous music with voice from the instructor both of which come through the student's headphones. The instructor's system has two sources of audio signal that are both inputs into a mixer/amplifier. One source is the instructor's microphone and the other source is a source of the music that is to be heard by the students. The music source could be MP3, CDs or the radio or an iPod, etc. Both the instructor's microphone and the music source are fed into a mixer/amplifier whose output feeds into both the instructor's headset and a transmitter having an antenna that transmits the combined signal to a receiver located in the waterproof headphones used by each student or by a separate receiver that is electrically connected to the student's headphones.