When They Might Be Giants were first starting out they experimented with an answering machine service named Dial-a-Song, by means of which listeners could call them in Brooklyn and listen to a random taped song. The service was popular enough that it broke down frequently, but not before it helped them get signed to an indie label, Bar/None. Jonathan Coulton, standing on the shoulders of the Giants both musically and spiritually, found fame by the 21st century equivalent of Dial-a-Song through "Thing a Week," a podcast that delivered a new song he had recorded every week for a...