This short communication applies a recently developed theory of moderate frequency flame-acoustic interaction to the classical experimental configuration of a flame resonating in a tube.It has been well known ever since the early experiments of Lord Raylcigh, that a flame (or just a hot porous gauzes— as used by Rijke) produces a loud “ gauze tone” due to the effect of the impedance of the flame/ gauze system on the progress of the acoustic waves up and down the tube. It is the significant change in the phase of the velocity of the acoustic disturbance which is all important in the resonance which occurs, The change in velocity is governed by a “ velocity transfer function” V which in general will be a function of the type of flame and geometry used.