It may be hard to nail down what gives someone “soul,” but two iconic performers are taking that je ne sais quoi on tour. Gladys Knight (“Midnight Train To Georgia”) and Patti LaBelle (“Lady Marmalade”) are joining forces for a summer tour that San Antonians can catch if they want to take a drive to Austin.

LaBelle will breeze through San Antonio’s Majestic Theater on June 17 for a solo show. She will meet Knight at Austin's Bass Concert Hall on Monday, June 19.

Both singers came up as frontwomen of groups — Knight with her family as Gladys Knight & the Pips, and LaBelle with girl group Labelle. Knight stayed more in the realm of soul and R&B, while LaBelle crossed over to a more rock sphere. Both have won numerous awards and are considered pioneers in the genre.

Knight and LaBelle are the same age, but after decades of friendship spanning the majority of their lives, the former calls the latter her “little sister.” The pair famously first appeared together in the 1986 HBO special Sisters in the Name of Love, and have been seen as a pair many times since, including when LaBelle bestowed Knight with her Kennedy Center honors in 2022 and even facing off in a Verzuz battle (a webcast stream in which the two artists chatted and took turns singing karaoke to their own tracks).

The duo will be hard to catch elsewhere, as both are on separate tours that only sometimes converge. LaBelle's only solo Texas stop is the Majestic Theater stop. Knight's independent tour schedule does not show any Texas date. The two will come together before their Austin show in Grand Prairie, Texas, at the Texas Trust CU Theatre on June 18.

Tickets for LaBelle's San Antonio performance are available at majesticempire.com via Ticketmaster. Tickets for the Austin performance will go on sale on March 31 at 10 am at texasperformingarts.org. Presale tickets are available to Texas Inner Circle members as of March 28.