It is not necessary to know all the dates and theory, but to appear on easy terms with the subject. This book goes quietly behind music and, in the nicest possible way, stabs it in the back.
This little thing is hilarious! It may be tailored to a specific niche - satirising those who view Classical as the only Real Music - but this is also the thing that keeps it from feeling too dated half-a-century later. These people still exist! As funny as this is, it'll actually be an immensely helpful resource for anyone working a music retail job.