Air Sounds

Air sounds are produced by aiming a diffuse air stream above the embouchure hole. Different sounds are possible, from a gentle "whoosh" to a harsh "hiss." The fingered pitch is discernible; while second- and third-octave air sounds are possible, the most effective notes are in the lowest register. Brian Ferneyhough combines air-sounds with regular pitches in Carceri d'Invenzione IIb.