by Megan Aemmer

It may not be the highest-selling musical genre, and you're not likely to catch a jazz vocalist on MTV, but jazz does have some of the most loyal listeners out there. Those who get into jazz are often fans for life. (Can you say the same about those '80s hair-metal bands you used to rock out to?) Maybe you can hum a few bars, but how much do you know about this truly American art form?