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This study addresses the use of high-fidelity Euler-Lagrange (EL) LES of turbulent spray flames subject to harmonic acoustic forcing in an attempt to predict the flame response, i.e. the so-called Flame-Transfer-Function (FTF). To do so, the SICCA-spray burner from the EM2C laboratory (CNRS, CentraleSupelec, Paris) is specifically addressed. In this first investigative step, the gain and phase (or characteristic time-delay) of the FTF are found to be sensitive to the fuel injection angle. Multiple simulations carried out with different injection angles (35 to 60 degrees) reveal a peculiar trend of the FTF gain and phase. For an increasing spray injection angle, the gain shows a decreasing bias while the phase (or time-delay) exhibits an increasing trend. Furthermore, the gain at the lowest angle (35 degrees) while the phase at the highest angle (60 degrees) are found to be in fair agreement with experimental values. Preliminary analyses performed using Dynamic-Mode-Decomposition (DMD) allows to explain such dynamics by identifying the regions of the flame / spray that activate in the different conditions.