Sam Bush, a well-known mandolin player, will headline this year’s River City Roots Festival in downtown Missoula. The annual music, arts and culture festival is set for Aug. 23-24.

Bush won the 2009 Americana Music Association Lifetime Achievement award, is known as a founding member of Newgrass Revival, and is considered the originator of “Newgrass” music. His most recent album “Circles Around Me” was No. 3 on the U.S. bluegrass charts.

Bush will play from 8:30-10:30 p.m. on Saturday, Aug. 24, on the Main Street main stage. The rest of the 2014 line-up will be announced at a later date.

Roots Fest is an admission-free festival that drew more than 15,000 people last year. The two-day event also features a juried art show, a four-mile competitive and fun run, a family fun festival in Caras Park, and a 15-vendor food court on Ryman Street. The 2014 event will also include a stand-up paddle board competition to be held on the Clark Fork River.