In This Is Your Brain on Music, onetime punk-rocker and famed producer Daniel Levitin put words to something we all intuit — listening to your favorite song is akin to smoking some really good sh*t. Now, music’s one-man PR team is back with The World in Six Songs, a book that aims to prove that music doesn't just make us feel good, our brains use it to organize society. From opera to Abba to Zappa, Levitin elegantly reveals how songs build friendship, joy, comfort, knowledge, religion, and love.