Sunny Side of Life was a film that focused on the children of which musician?
Alvin Pleasant Delaney Carter
Title: Sunny Side of Life
Passage: Sunny Side of Life is a 1985 documentary film about the musical Carter Family focusing on the children of A.P and Sara who still live in the mountains and are trying to keep the legacy of their ancestors alive, at the Carter Fold near Maces Spring, Virginia.  It includes interviews with the clan including a small snippet with June Carter Cash.  The title is based upon the early Carter Family hit recording, "Keep On the Sunny Side" (1928).
Title: A. P. Carter
Passage: Alvin Pleasant Delaney Carter (December 15, 1891 – November 7, 1960) professionally recording as A.P. Carter, was an American musician and founding member of The Carter Family, one of the most notable acts in the history of country music.
Title: Sunny Side, Maryland
Passage: Sunny Side is an unincorporated community in southwestern Frederick County, Maryland, United States.  The village is located between U.S. Route 15 and U.S. Route 340, south of Jefferson and northwest of Adamstown.  The Sunny Side United Methodist Church is located in the community.
A. P. Carter Sunny Side of Life