Next, we compare the spectra generated with the E-FC family of approaches. The pictorial representation of the working of E-FC methods for 7MC in methanol is shown in Figure . The individual explicit solvent FTFC absorption and fluorescence lineshapes of 7MC in methanol, along with the resulting E-sum 100 FTFC spectra, are shown in Figure . We find that there is a large degree of variability in the features of the individual FTFC lineshapes, but the trend of the FWHM values is consistent with the wider emission predicted by implicit solvent, with average values of 0.416 eV for the absorption lineshape and 0.630 eV for the emission lineshape, see FWHM distribution in Figure . Both of these values are smaller than those predicted by the implicit solvent approach, suggesting that for 7MC, the explicit solvent decreases the vibronic coupling compared to the implicit solvent model, opposite of what we see with NBD. The relatively broader implicit solvent FTFC lineshapes are due to the larger displacement of the excited state potentials in implicit solvent, leading to more vibronic broadening. Although it is difficult to separate the role of individual factors affecting the lineshape, our analysis suggests that the most important geometrical change is associated with the planarity of the pyrone ring. For spectra with no vibronic features, the ring remains out-of-plane after optimization. For emission, we observe three distinct categories: spectra with the first peak as the maximum, spectra with the second peak as the maximum, and only one maximum but overly broad. Following the same procedure as with the other dyes, we chose random snapshots for generating the average FC lineshape, and found that there is minimal variation after ten vibronic spectra are included in the averaging procedure. Given the variability of lineshapes, a more sophisticated averaging scheme could be envisioned that weights the lineshape based on the percentage of particular configurations, but here, we choose not to explore this direction.