A stereo sound of light switches on. It is recorded during a summer vacation in an empty school. Gear used: Sound Devices 833, Neumann KM184 stereo set (tracks 1, 3, 5), Schoeps MK4 stereo set (tracks 2, 4, 6). Tracks: 1) Empty School Classroom Lights Switch On_1 = 0:12, 2) Empty School Classroom Lights Switch On_2 = 0:12, 3) Empty School Classroom Lights Switch On_3 = 0:18, 4) Empty School Classroom Lights Switch On_4 = 0:18, 5) Empty School Classroom Lights Switch On_5 = 0:20, 6) Empty School Classroom Lights Switch On_6 = 0:20,