Alter Ego will be the headline entertainment at the Billings Clinic Foundation’s Street Party on Broadway Ave. for the 2019 Billings Clinic Classic, Saturday, Aug. 24. The theme of this year is Urban Classic, playing on the street party setting and classic downtown Billings elements. Proceeds benefit the Sustainable Fund for the Psychiatric Services Residency Program at Billings Clinic, Montana’s first and only psychiatry residency program. Alter Ego, from Montreal, Canada, is North America’s top party band. Kicking off the evening will be Arterial Drive, a six-member band from Billings, who will perform during a festive cocktail pre-party. The 2019 Classic will be held outside on Broadway Ave., between 3rd Avenue North and 4th Avenue North. Billings Clinic Classic tickets range in price from $100-$200.