Examples of successful SED fits. For these star clusters, the FDS fluxes (orange) and the MUSE spectra (grey) were fitted with BAGPIPES. The best-fit model SED is shown in purple in the region without spectroscopy and in blue in the region of the MUSE spectrum. Corresponding model fluxes are shown by the dark blue squares. The shaded regions and the extension of the squares span between the 16th and 84th percentiles of the posteriors. Best-fitting age and metallicity are shown in the top left panel.