  Integrated light (IL) spectroscopy enables studies of stellar populations
beyond the Milky Way and its nearest satellites. In this paper, I will review
how IL spectroscopy reveals essential information about globular clusters and
the assembly histories of their host galaxies, concentrating particularly on
the metallicities and detailed chemical abundances of the GCs in M31. I will
also briefly mention the effects of multiple populations on IL spectra, and how
observations of distant globular clusters help constrain the source(s) of
light-element abundance variations. I will end with future perspectives,
emphasizing how IL spectroscopy can bridge the gap between Galactic and
extragalactic astronomy.
