“Installing and tuning the Earth Harp is a two-day process. On this day, [inventor William] Close is getting ready to drop 42 strings, weighted by water bottles, off the edge of the 700-foot building. His tech, Jonathan Golko, will catch them and attach them to the harp’s main resonating chamber. The following day, Close will tune the harp, a process that he’s got down to a science. He can vibrate four notes out of each string.”