The star of the forthcoming film The Rivals of Amziah King joins the group the Last Bison on The Tonight Show With Jimmy Fallon for a rambling version of the hit song

Ella Langley’s “Choosin’ Texas” has already conquered the country charts. Now it’s getting the bluegrass treatment, courtesy of Matthew McConaughey and the Last Bison.

During a Wednesday appearance on The Tonight Show Starring Jimmy Fallon, McConaughey joined the Virginia folk group for a loose, homespun rendition of Langley’s chart-topping hit. The performance arrives just ahead of the Aug. 14 theatrical release of The Rivals of Amziah King, in which McConaughey plays Amziah King, a musically gifted beekeeper and community fixture in rural Oklahoma who leads a ragtag bluegrass band of his own.

The Fallon stage was dressed like a rural roadhouse transported onto late-night television, with a weathered red barn door glowing beneath strings of lights as McConaughey stood at the center of the makeshift ensemble. The Last Bison surrounded him with a thicket of acoustic instrumentation, including guitar, banjo, bass, and mandolin, while Fallon, cowboy hat planted firmly on his head, joined the fray with a washboard. McConaughey leaned into the song’s easygoing twang, which made Langley’s tale of romantic abandonment for a Texas rival sound like a song that had been passed around a porch for generations.