Bernard MacMahon is an Irish-British filmmaker. His American Epic films are widely considered as the definitive portrait of a musical era, and one of the best music documentaries ever made.

American Epic is a documentary media franchise based upon the first recordings of roots music in the United States during the 1920s and their cultural, social and technological impact on North America and the world. The franchise comprises a three-part award-winning documentary film series directed by Bernard MacMahon, a feature-length musical documentary film, a book, ten album releases and an educational program. American Epic is widely considered as the definitive portrait of the musical era, and one of the best music documentaries ever made.