Music may be the original language. People, before they learned how to talk, likely vocalized in pitch. As language developed, music faded into the background, but never disappeared as a communication tool. It is still the universal language.
Smart learning professionals use music to communicate their message. One excellent example can be seen in the work of Hawaii-based history teachers Amy Burvall and Herb Mahelona.
Mahelona provided the technical know-how and Burvall sang modern pop songs