In his new book, Agbadza: Songs, Drum Language of the Ewes (African Music Publishers), music professor Gideon Foli Alorwoyie explains the deeper meaning behind the music, lyrics and language of the drums that the Ewes in West Africa have developed for centuries.

The tradition, which began in the 17th and 18th centuries, is still used today in wakes, memorial services and important events. Yet, the cultural significance is being lost as that region of the world moves toward modernization.

"I want this to be my legacy," Alorwoyie says. "I want the book to educate people to keep hold of their culture so that others can understand the meaning behind the music."