Wow. It’s already the 15th year of the High Zero Festival—just another one of the off-beat (no pun intended) arts celebrations that gives Baltimore its unique flavor, and a reputation for being a hub of creativity. Known primarily as a festival for experimental and improvisational music, High Zero now encompasses much more than that—with film screenings, dance pieces, and—of course—music, taking place in a few venues around Mt. Vernon. If you’re willing to venture a little farther, you even can take workshops from musical masters at Peabody, Goucher, and Towson too—all as a part of High Zero.