In an age of ubiquitous music and countless new songs releasing every minute, the Great American Songbook endures. After all, the Songbook--that sprawling canon of popular songs, standards, and show tunes from roughly the 1920s through the 1950s--is a foundational text of American pop music. Rare indeed is the song that doesn't in some way draw on this magnificent corpus, and rare is the person who hasn't heard at least a few of its most enduring...