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Revealing the structure of materials has long been grounded in our ability to resolve the periodic arrangement of atoms in crystalline systems through the interpretation of patterns of Bragg peaks, as observed by X-ray scattering. However, atoms are not static: atoms can oscillate at specific frequencies that are determined by the combination of interactions and thermal effects. These collective vibrations and excitations, termed phonons, encode interatomic interactions and govern the thermal, mechanical and optical properties of materials. Typically, inelastic X-ray and neutron scattering techniques can be applied to probe lattice dynamics by measuring energy exchange processes between the lattice motions and the incident beam. Although phonon modes are well-defined in ideal crystals, real systems exhibit a spectrum of interacting and overlapping modes that often require further deconvolution and computation to isolate and identify them.