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Great Peacock. (Courtesy David McClister)

(David McClister)

It's almost like a natural amphitheater. A big open field on an incline, with some pecan trees.

The city-owned Huntsville parcel of land, near the intersection of Lowe Avenue and Gallatin Street, is part of the downtown area once home to the Huntsville-Madison County Mental Health Center and has been targeted for a federal courthouse.

On June 25, the grassy area will become a concert venue. At least for one summer night. Nashville folk-rock band Great Peacock headlines a 5- 9 p.m. bill that also features local acts The Beasley Brothers and .45 Surprise.

Downtown Huntsville organized the free concert, which the development nonprofit organization is calling TwickenJam. "With Twickenham Square almost nearing completion in terms of filling out tenants we thought now would be a good time to celebrate this great project in downtown Huntsville," DHI CEO Chad Emerson says. Since 2014, Twickenham Square has become home to restaurants including Taco Mama, Cajun Steamer, Asian Rim and Mei Wei, as well as a Publix Super Market and Artisan apartments.

Great Peacock released their harmony-heavy debut album "Making Ghosts" in May. Music fans into vintage strum (a la Crosby, Stills & Nash) or hirsute-indie (Fleet Foxes) are likely to enjoy this band, anchored by singer-songwriters Andrew Nelson and Blount Floyd. During our 2014 AL.com/Huntsville Times interview, Nelson said for "Making Ghosts" Great Peacock wanted to create music "that would be really easy for people to sing along with in their cars."

TwickenJam openers Beasley Brothers specialize in acoustic pop. Earlier this year the group won Que The Music voting earning the band a chance to open for "Dust in the Wind" classic-rockers Kansas at WhistleStop Weekend, the barbecue festival and signature Huntsville event. Outlaw country and bluegrass figure heavily in the music of .45 Surprise, a group whose song titles include "Three Generations of Cain."

"We normally have concerts on the square and Big Spring Park," Emerson says. "But we said, 'Let's think of some new locations, indoor and outdoor, where we can have live music,' and this (Lowe Avenue) one jumped to the forefront. We have this great piece of city-owned property which the city has generously allowed us to use it and it's right there (near) Twickenham Square."

DHI is known for its hit Street Food Gathering events and food trucks are often part of the organization's programming. However, Twickenham Square restaurants will be the sole food providers at TwickenJam.

"Some will have carry-out at the restaurant, some will be on-site," Emerson says. "It's just a short walk to Twickenham Square, where you can also get to-go beverages since this will be inside the entertainment district on a Thursday evening. It's just like regular entertainment district rules: You can't bring your own alcohol. You can purchase it over at Twickenham Square and bring it over to the concert."

Listen to Great Peacock's LP "Making Ghosts" below: