SIDNEY — The Historic Sidney Theatre, 120 W. Poplar St., will present its second Backstage Block Party Concert, July 29, at 6 p.m.

The free event will also feature food trucks and a beer and wine tent.

Country legend Lee Roy Parnell will perform. Parnell is part of a long line of Texas roots-music eclectics and is among the elite few who can be identified as a triple threat. An ace guitarist, as well as a distinctive singer and hit songwriter, his music runs the gamut of diversity. Combining the influences of blue-eyed soul, Delta blues, road house rock, Southern boogie, Texas swing, and gospel, Parnell’s sound defies conventional classification. He draws from a broad range of musical sources and combines them with seamless dexterity and, unlike many other hard-to-pigeonhole artists, Parnell has enjoyed a run of success on the country and blues charts. Parnell will release his first studio album since 2006, “Midnight Believer,” on Aug. 11.

Guest starring with Parnell is Christian Kaser, a native of Northwest Ohio. Kaser is making waves and is poised for success with his soon-to-be-released single, “That’s What’s Up.” Recently, Kaser has been opening for major label artists, including Chase Bryant, Colt Ford, Dan plus Shay, and Sam Hunt.

The Backstage Block party will open its gates at 5:30 p.m. and feature the local favorite, Haywired, starting at 6 p.m. Haywired plays today’s newest style of country music. All four members hail from Ohio.