Applications of attosecond science are rapidly coming online. The extension of strong field effects to condensed phase media has opened up exciting new physics, a huge experimental parameter space and a host of potential new applications including PHz rate optoelectronics, compact attosecond sources, spaced based quantum communications and high harmonic spectroscopy in the condensed phase. However, given the complexity of the condensed phase much work needs to be done to understand and predict the impact of strong field in a solid and identify optimal candidate materials for each application. We present some simple High Harmonic Generation experiments in a range of wide bandgap materials, in the strongly driven to over-driven regime which exhibit new phase relationships. We look to extract empirical relationships with macroscopic parameters and an understanding of the inertia experienced by an electron strongly driven though a periodic lattice.