We believe that our approach, besides shedding new light on the relationships between the conformational ensembles and the spectroscopic fingerprints of disordered peptides, may also be helpful for the development of novel semi-empirical data-set-based approaches for the calculation of light-absorption spectra. In particular, several different, spectroscopically relevant 'coil' structures should be taken into account along with traditional ordered elements such as α-helices and β-sheets. Moreover, the clustering method and sketch-map visualization of the conformational ensemble may be of great advantage in future studies aiming at rationalizing the conformational-ensemble changes that peptides undergo upon solvent-exchange or adsorption at solid/liquid interfaces.