Part reference book, part history, and part road map to the connectivity of popular music, this book is a must for all rock 'n' roll fans as it brings together a compilation of over two hundred genres of rock music--an entertaining, enlightening, knotty family tree of America's favorite musical genre. The essential companion for any rock lover's collection--be it on vinyl or Spotify playlists--Appetite for Definition breaks down algorithms into their human stories and interconnected histories. It provides and pulls up recommendations from a deeper well of consideration and gives you the tools to do the same. Operating on a macro level it surveys the myriad microlevel movements into an accessible map that readers can use to navigate the vast, craggy terrain of rock music and take their rock knowledge--whether casual or obsessive--to the next level.