The piece was prompted by the experience of exposure to close lightning, and running fast before it in wild exhilaration, aware that it could kill at any moment. The flute, with its vivid connection to turbulent storm-wind, is also close to human breath, breath in emotion. The acoustic structure of the flute's tube determines how the turbulence is channeled into musical sound; and canonic melodies channel further the musical sound's embodiment as structure.