River House Restaurant Concert Series Extends to August with New Acts at Prescott Park

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Allen Stone, Madi Diaz, Langhorne Slim, and Fantastic Cat headline the expanded lineup.

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Prescott Park Arts Festival has announced additional August performances for its 2026 River House Restaurant Concert Series, taking place on the Wilcox Main Stage along the Piscataqua River in Portsmouth, New Hampshire.

The August lineup will feature returning artists, Grammy-nominated singer-songwriters, and Americana and indie folk performers as part of the festival’s ongoing commitment to accessible live arts programming. All concerts are presented with a recommended $20 donation, though admission remains open to all attendees regardless of contribution.

“This round of announcements makes me so happy, and I think it reflects everything we try to do at the Festival,” said Executive Director Courtney Perkins in a statement. “There is nothing quite like welcoming back artists like Allen Stone and Langhorne Slim, performers who have stood on this stage before and left this community wanting more.”

The series will begin August 12 with the Ryan Montbleau Band, followed by returning performer Allen Stone on August 13. Singer-songwriter Jordan Caiola will perform his solo project Caiola on August 15.

Two-time Grammy nominee Madi Diaz will appear August 19 following the release of her recent albums Weird Faith and Fatal Optimist. Fantastic Cat will return to the festival August 21 after previously appearing as an opening act, and Langhorne Slim will close out the month on August 28 with a full-band performance.

All performances begin at 7:00 p.m. on the Wilcox Main Stage in Prescott Park.

The concert series does not sell tickets and remains accessible to all audiences through an optional recommended donation model. Guests may also make online general admission donations in advance of attending performances.

Blanket and table reservations in The Kane Company VIP Seating Area will open for season passholders on May 28 and to the general public on June 2.

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_Originally reported by [BroadwayWorld](https://www.broadwayworld.com/new-hampshire/article/RIVER-HOUSE-RESTAURANT-CONCERT-SERIES-to-Add-August-Shows-at-Prescott-Park-20260527)._