The interest in 2-adamantanone (C10H14O) stems from its role as a model to study glassy phenomena which arise from the action of well-defined degrees of freedom concerning the occupational disorder. The most striking characteristic of the low-Temperature monoclinic phase (P21/c) is the existence of statistical disorder concerning the occupancy of the oxygen atom along 3 different sites (occupancies are 50%, 25% and 25%). The existence of the fully ordered (orthorhombic, Cmc21) phase makes available to us a ground state to be taken as a reference for any fundamental physical property. Our aim is to carry out measurements of the spectral frequency distribution over a wide range of energies for 2-adamantanone of the fully ordered orthorhombic phase and at the occupational disordered monoclinic phase which can be directly compared with our DFT results.