The Polyphonic Spree, led by singer Tim DeLaughter (second from right), will perform in a "Care For the Caravan" benefit concert on May 18 at the Granada Theater in Dallas. 

The Polyphonic Spree, led by singer Tim DeLaughter (second from right), will perform in a "Care For the Caravan" benefit concert on May 18 at the Granada Theater in Dallas. 

Tom Fox/Staff Photographer

In the run-up to last year's contentious mid-term elections, Senate candidate Beto O'Rourke seemed to draw thousands of eager young voters to every stop he made along the campaign trail. One of the most notable such stops for North Texas music fans was the Buffalo Tree Festival, which took place in Main Street Gardens Park in downtown Dallas on Oct. 7.

Texas indie-music stars Spoon, Sparta, Sarah Jaffe and Bobby Sessions joined together to host O'Rourke and a number of other Democratic candidates for a day of music and politics.

Another band from that well-stacked lineup was Dallas' favorite chamber-rock collective, the Polyphonic Spree. On May 18, the Tim DeLaughter-led outfit will take center stage on yet another socially and politically charged event put on by the folks who organized the Buffalo Tree Festival.

Tim DeLaughter of the Polyphonic Spree has a history of lending a hand for political and charitable causes. 

Tim DeLaughter of the Polyphonic Spree has a history of lending a hand for political and charitable causes. 

2015 File Photo/Denton Record-Chronicle

According to Rolling Stone, the two-night "Care For the Caravan" will begin at the Granada Theater, offering performances by the Polyphonic Spree as well as local hip-hop group Cure for Paranoia, Austin's Tiarra Girls and Dallas' Cry Havoc Theater Co. The following night, there will be a smaller event in Austin for what the event's website calls its "collection caravan," but that will not feature the Polyphonic Spree.

According to the festival website, the event will "work to amplify the humanitarian crisis, mobilize grassroots support and bring critical aid to those in need at the southern border." The organizer's goal is to deliver the money and items collected on May 18 and 19 to "those in need at the border in McAllen" on May 20.

Rolling Stone writes that attendees are encouraged to bring and donate essential items, including new and unused toiletries, shoes and clothes for children and adults of all sizes, baby supplies for toddlers, gift cards to purchase food items, resealable plastic bags, phone cards, and jugs of water. 

Tickets are $15 and can be purchased at buffalotreepresents.com.

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