In a recent collaborative paper published in the Journal of Chemical Physics Giacomo has shown (with help from Yuki Nagata and Peter Saalfrank) that there is, in fact, more to life than normal mode analysis in understanding vibrational spectra of the Alumina/water interface. Using a scheme based on velocity-velocity autocorrelation functions calculated from ab-initio molecular dynamics trajectories he computes vibrational density of states, infrared and vibrationally resonant SFG spectra of submonolayer coverages of water on the α-Al2O3(0001) surface. Conveniently this approach allows him to directly address the contributions of anharmonicity, mode coupling and thermal motion to our experimental spectra thus strongly enhancing our ability to compare theory and experiment.