Kelefa Sanneh hopes to start some arguments with his new book, “Major Labels,” which chronicles the past 50 years of rock, hip-hop, country and other musical genres.Kelefa Sanneh hopes to start some arguments with his new book, “Major Labels,” which chronicles the past 50 years of rock, hip-hop, country and other musical genres.Read MoreContent Type: Personal Profile, Books and Literature, Pop and Rock Music, Sanneh, Kelefa, Music, New Yorker, Major Labels: A History of Popular Music in Seven Genres (Book)

