The term 'Music Medium' can be broken down into two crossword solutions: RADIO (5 letters) and FM RADIO (7 letters). RADIO is a form of communication that uses electromagnetic waves to transmit sound, typically music, over a distance. FM RADIO is a type of RADIO broadcasting technology that uses frequency modulation to provide higher-fidelity sound than traditional AM RADIO. FM RADIO is the most popular form of RADIO broadcasting in the world today.