Up, Where the Air Gets Thin, music takes on new meaning. Sir Edmund Hillary and Tensing the Sherpa who first reached the top of Mount Everest could not whistle with awe at the view, for it is impossible to whistle above 25,000 feet. Up where the air gets thin lies the acoustic horizon, the elusive line at the extreme range of audibility, where old decaying sound waves tremble and shake into formless echoes of themselves. Up, Where the Air Gets Thin is like an e.e. cummings poem. It explores imaginatively strange acoustic effects at extreme heights. This was written for and premiered by the Minneapolis Artists Ensemble.