Pressure-tuning dispersive Raman spectroscopy, using diamond anvil cells, has many of the common limitations of Raman spectroscopy such as low signal intensity, as well as photodecomposition and fluorescence of many samples. In the present investigations, the pressure-tuning experiment has been successfully coupled to an FT-Raman spectrometer using a microscope for sample alignment and measurement. The use of a holographic notch filter to eliminate the intense scattering due to the diamond anvil cell is discussed and studies involving organometallic complex, polymers, and biomolecules are presented.