Theory. Lighthill's theory of aerodynamically generated sound is applied to the flow past a stationary circular cylinder with a fluctuating wake, a phenomenon related to “Aeolian Tones.” The main predictions of the theory are as follows: (a) A tone is produced having the same frequency as the wake. Its directionality is that of a line dipole with axis normal to the stream. This sound is associated with the fluctuating lift force acting on the cylinder. (b) A tone is produced having double the wake frequency. Its directionality is that of a line dipole with axis parallel to the stream. It is associated with the fluctuating drag force. (c) The intensity of both tones at points of the midplane in the far field varies approximately asU6, whereUis the stream velocity. (d) The acoustic power varies asUn,nlying between 5 and 6.Experiments. Measurements were made in the subsonic wind tunnel laboratory of the Institute of Aerophysics. Circular cylinders of various diameters were mounted in the tunnel test section, and sound pressures were measured at points inside and outside the tunnel over a range of speeds. Graphs are presented showing over‐all sound pressure levels, sound spectra, and equal level contours. The results obtained are in general agreement with the predictions of the theory.