BRUNSWICK – The local indie-rock band 9th Rail and the eclectic folk-meets-contemporary trio DXR will join forces for a benefit for (and at) The Theater Project. The concert will begin at 7:30 p.m. Friday, March 6.

9th Rail’s original sound reflects elements as diverse as seminal 1990s indie-rockers Pavement, the alt-country band Son Volt and the hard-edged folk of Woody Guthrie. Leader, vocalist, guitarist and primary songwriter Dan Nelson, now 17, has been writing songs and performing in Brunswick and Portland since age 11. Fellow band members are Jon Simmons, keyboards; Jasper Boyd, bass; and Sam Nelson, drums. All are students at Brunswick High School.

DXR is an intergenerational trio that interprets folk music through both traditional and contemporary lenses. Dan Nelson, the “D,” is frontman for this group as well, here featured on acoustic guitar and banjo in addition to lead vocals. The “X” is bassist Xar Adelberg, who tours with the gypsy-jazz trio Ameranouche. And the “R” is Dan’s father, Richard Nelson, noted guitarist and head of the jazz and contemporary music program at the University of Maine at Augusta. DXR’s set list ranges from familiar folk and bluegrass settings to contemporary sheens that evoke the likes of Radiohead and Bill Frisell.

Tickets are $5. Advance reservations are recommended; call 729-8584. The Theater Project is at 14 School St.