Group {

    children [

        Shape {

            appearance Appearance {

                material Material { diffuseColor 1.0 1.0 1.0 }

            }

            geometry Box { size 0.23 0.1 1.5 }

        }

        DEF C4 TouchSensor { }

        Sound {

            source DEF PitchC4 AudioClip {

                url "tone1.wav"

                pitch 1.0

            }

            maxFront 100.0

            maxBack 100.0

        }

    ]

}

ROUTE C4.touchTime TO PitchC4.set_startTime