The Good Lovelies perform at the Matthews Opera House in Spearfish Saturday at 7:30 p.m. The funny and upbeat Canadian trio bring textbook three-part harmonies, constant instrument swapping and witty on-stage banter with just a pinch of sass to their shows. Lighthearted songwriting and irresistibly buoyant dispositions have made The Good Lovelies the darlings of the summer festival circuit, including spots at the storied Mariposa and Hillside Festivals and the Montreal Jazz Festival. In 2010, they received a Juno Award for Roots/Traditional Album of the Year for their self-titled full-length release. The Good Lovelies are Sue Passmore, who visited with Dakota Midday host Karl Gehrke, Caroline Brooks and Kerri Ough.