A curious event at a curious location that’s worth a trip. Waterworks is a “Festival of Experimental Sound” held inside the Metropolitan Waterworks Museum on the banks of the Chestnut Hill Reservoir. A big, airy, stone structure. One of those high-minded public works built at the turn of the 20th century during Boston’s so-called “Golden Age.” The acoustics of the building are an equal partner in the experience of bleeding-edge experimental works at the far outskirts of the jazz, electronic, noise, improv and aleatoric music scene. Part of the Non-Event Concert series.