Paradocx Vineyard (1833 Flint Hill Rd., Landenberg) opens its summer concert series on Memorial Day weekend with rock and jazz by Syde 2 with Leon Spencer (May 24, 5 to 9 p.m.) and pop-rock by the Essentials (May 25, 5 to 9 p.m.). Tickets are $10, including music and one glass of selected wine. Food will be available from George's Seafood, along with food trucks at every concert. The trucks on Memorial Day weekend are The Whirly Pig (Saturday) and Natalie's Fine Food (Sunday). Passes for all 11 summer concerts are available. The schedule includes: Rory Sullivan (June 7); Dave Renz (June 21); Tom Larsen (July 5); Minas (July 19); Sinatra (Aug. 16); The Blue Route Band (Aug. 30); Ben Arnold and Rory Sullivan (Sept. 13); Knowlton Point (Sept. 27); Splashing Pearls (Oct. 4). For more information, visit www.paradocx.com.