Sound American, the great online music journal edited by trumpeter Nate Wooley and affiliated with the terrific DRAM archive of contemporary classical music, went live with its fourth and latest issue over the weekend. While previous issues have focused on contemporary classical stuff—including one devoted entirely to the work and ideas of John CageSound American hasn’t been purist in its scope at all. Its first issue focused primarily on gospel music, while the second examined the idea of musical networks—whether they were the improvising group the BSC or the legendary computer-network band the League of Automatic Composers. The latest issue takes on a fairly monumental task: trying to define American music.