In his dynamic tour through 40,000 years of music, from prehistoric instruments to modern-day pop, Howard Goodall leads us through the story of music as it happened, idea by idea, so that each musical innovation—harmony, notation, sung theatre, the orchestra, dance music, recording—strikes us with its original force. Along the way, he also gives refreshingly clear descriptions of what music is and how it works: what scales are all about, why some chords sound discordant, and what all post-war pop songs have in common.