Complex sentence: Andersen, 70 Their last show, on November 6, as opening act for SVT at the, was a key event for the popularity of all-ages shows--where alcohol was not for sale, and thus no age restriction for admission.
Split into simpler sentences: Andersen, 70 Their last show was on November 6, when they opened for SVT at the. It was a key event for the popularity of all-ages shows--where alcohol was not for sale, and thus no age restriction for admission.