The money from ticket sales for the Aug. 15 show at McMahon Stadium is to go to the Calgary Foundation's Flood Rebuilding Fund.
Other artists who have already confirmed their appearance include Tom Cochrane, Matthew Good, The Sadies and The Sheepdogs.
Organizers say the list of performers continues to grow.
Comedian Brent Butt is to be host for the evening.
The fund is aimed at long-term community rebuilding, including in the hardest-hit areas of High River, Canmore and First Nations reserves.
Tickets will be $30 and TicketMaster has agreed to waive all usual service fees.