By titling their third album, Fear of Music and opening it with the African rhythmic experiment "I Zimbra," complete with nonsense lyrics by poet Hugo Ball, Talking Heads made the record seem more of a departure than it was. Though Fear of Music was musically distinct from its predecessors, mostly because of the use of minor keys that gave the music a more ominous sound. Previously, David Byrne's offbeat observations had been set off by an overtly humorous tone; on Fear of Music, he was still odd, but no longer so funny. At the same time, however, the music had become even more compelling.