Summer nights are a little cooler when there's a melody drifting through the breeze, and this July PFA is happy to provide the tune with a series on music from around the world and from far, far off commercial radio's blander-by-the-day dial. The documentaries in I Hear Music run the gamut from Madagascar to Manhattan, klezmer to classical. Travel the globe with Bay Area improv genius Fred Frith, or journey to the past with a Swiss classical composer; settle down with three Brooklyn brothers while they tell tall tales, crack jokes, and sing, or follow seven Malagasy legends as they back up their protest songs with action. From rehearsal to performance, the heat of the tropics to the cool of Geneva, I Hear Music has sounds-and visions-for everyone.