The principal parameters governing the generation of almost pure tones (Aeolian tones) by a roll in a wind have been identified and measured, guided by a theory due to Etkin. In particular, the connection between rms fluctuating lift and the correlation length of the shedding vortices has been recognized, and light has been shed on both by measurements. This has been a group program and has been partially reported elsewhere. Reported herein are the comprehensive measurements of the fluctuating forces on the rod and of the sound field they generate. Sealing or unsealing the ends and the addition of disks at various spacings are found to have major effects. Substitution of the measured parameters in the theoretical equation yields sound pressures in acceptable agreement with experiment. The experiments covered a Reynolds number range of approximately 3000⩽Re⩽100 000.