The Green Room: Public domain or copyrighted material?

The song “Happy Birthday” has a long, litigious history dating back to the 1930s. Every year, people spent millions in royalties to use the song, until a class action lawsuit was brought challenging whether the owner, Warner/Chappell Music, actually owned the copyright it so aggressively enforced. Elizabeth Townsend-Gard, Tulane School of Law professor specializing in copyright law, discusses the case of “Happy Birthday.”