John Oswald's A Time to Hear for Here is a five-story high circadian sound mobile that can in an unpredictable interval transform from a whisper in Mecca to a storm in Moncton. Throughout each day are thousands of unique never ending combinations of sonic signifiers and musical moments distributed over dozens of loudspeakers in six-dimensional aural-architectural time/space. Located adjacent to the main entrance in the new Crystal wing of the Royal Ontario Museum in Toronto, one of the largest natural and cultural history museums in North America, the exhibit is freely accessible daily.