As presented by NewMexiKen, NPR's 100 most important American musical works of the 20th century. None from my Top 20 made the list (I only wish my knowledge of music were that sophisticated or diverse), though I spotted a few favorites like "Good Vibrations", "Let's Stay Together", and Carole King's Tapestry album. NPR has a story for every musical work (some aren't songs but albums or musical scores). Worth spending some time on.