Mavis Staples and Patty Griffin will embark on a co-headlining run this summer. The Sweet Harmony Soul tour will kick off on July 8 in Interlochen, MI before swinging through the Midwest and the West Coast over the course of the month. The artists will be joined by Amy Helm, who will open each show will her band The Handsome Strangers.

Staples and Griffin met in 2007 during a recording session for the Grammy-winning gospel duets album Oh Happy Day: An All-Star Musical Celebration. The record—released in 2009—featured the pair’s collaboration “Waiting For My Child To Come Home.”

Tickets for the shows will go on sale in the coming weeks, and more dates are expected to be announced.

Sweet Harmony Soul Tour Dates

July 8 Interlochen, MI – Interlochen Center for the Arts (Kresge Auditorium)
July 9 Grand Rapids, MI – Meijer Gardens Amphitheatre
July 11 Bayfield, WI – Lake Superior Big Top Chautauqua
July 14 Boulder, CO – Chautauqua Auditorium
July 16 Arvada, CO – Arvada Center
July 17 Avon, CO – Vilar Performing Arts Center
July 18 Alta, WY – Grand Targhee Fest
July 21 San Diego, CA – Humphrey’s Concerts by the Bay
July 23 Saratoga, CA – Montalvo Arts Center