Spectra of GC #276 for which spectra from MUSE (top), OSIRIS (middle), and FLAMES (bottom) are available. The black lines show the data, and the blue and red lines are the fits with PPXF. Shaded regions were excluded due to sky line residuals. The MUSE and OSIRIS spectra were fitted with XSL SSPs, while we used high resolution stellar models from Coelho (2014) to fit the FLAMES spectrum shown here.