songfacts.com is a great site at sucking you in and keeping you there. For example, let's say I look up Maybellene by Chuck Berry. It gives me lots of useful info...for example, this song evolved from a Bob Wills song entitled, "Ida Red." Now, the really good part is at the bottom. Depending on what song you're viewing, you will be given various other searching options; e.g., More songs by Chuck Berry, More songs that were adapted from country songs, More songs with product names in the title, etc. This is a great way to induce surfing through the site and led me to many other songs I never would've thought to look up. This is a music trivia master's dream!