Fortunately, similar to the ground state CMES, which can be obtained from CNEO-DFT calculations, we anticipate that excited states CMESs can be calculated with excited states CNEO methods, for example, CNEO time-dependent density functional theory (CNEO-TDDFT). The related method development on CNEO-TDDFT for real molecules is ongoing in our group, and this current paper on model systems serves as the theoretical motivation for its development. All these developments will make CNEO method promising approaches for modeling and interpreting vibrational spectra for a variety of vibrational spectroscopy.