In Part 3 of Tom Reney's interview with Ricky Riccardi, author of Heart Full of Rhythm: The Big Band Years of Louis Armstrong, they discuss Armstrong's tour of England in 1932, and his European sojourn in 1934-35; his top billing in the movie, Pennies From Heaven; his groundbreaking achievement as the first African American host of a network radio series; and the controversy over his 1938 recording, "When the Saints Go Marching In."