Eventually, the murmur of voices grew louder, mixing with the sound of a nearby string quartet, and they reached the end of the corridor. Here was the upper level of the short northern section of Canterlot Palace's main gallery, and their group joined a few dozen other ponies waiting in a loose line to be let in to the rotunda, where Princess Celestia and Princess Luna received guests, and the lower east, west, and north galleries and their adjoining salons hosted the Gala's indoor delights. 