The Rest Is Noise, after which this blog is named, is now in paperback. To mark the occasion, I'm introducing a Glossary of terms that appear in the book, with audio illustrations. Hopefully this webby feature will offer a helping hand to readers who stumble over the tritone, the cluster, and the like. I have also greatly expanded the Audio Guide, so that there are now some three hundred audio examples, dozens of photos and archival documents, and assorted videos. (Many thanks to Billy Robin, who worked with me on both features and assisted with various other projects over the summer; Jeff Seroy, who let me record weird modes on his piano; Matthew Guerrieri, Kyle Gann, and Tiffany Kuo, who answered queries; and Andy Mouldovan, who made the audio icon.) I will make more appearances on behalf of the book this fall, though nothing like last year's craziness. On Oct. 30 I'll be at the Jewish Community Center in San Francisco, talking to Joshua Kosman; on Nov. 1 I'll give my twentieth-century audiovisual tour at the Chicago Humanities Festival; on Nov. 10 I'll speak on Messiaen at ASU in Tempe, AZ; and Nov. 24 I'll appear at the 92nd Street Y.