Such a dependence implies that the manipulation of the condensed phase molecular dynamics according to the PES structure should have a clear effect on the physical properties of disordered solids, which has effectively been shown on previous studies involving vapour deposition of molecular glass-formers. Terahertz radiation is an ideal tool to investigate this, since the lowfrequencies excite large-amplitude motions of entire molecules, and has indeed been shown to guide disordered processes, such as governing protein-ligand binding and driving biomolecular DNA mechanisms. This work extends this by using high-powered teraherz pulses to drive solid-state crystallisation in amorphous pharmaceutical solids. Such experiments add to the strong evidence in support of the PES picture of disordered dynamics, and that related phenomena can be directed through this fundamental understanding.