Lucky 757, a rockabilly band out of Portsmouth, will perform Friday night at Flat Iron Crossroads in Gloucester. Doors open at 5 p.m., with the show running from 6:30 to 9:30. Lucky 757 came on the music scene in 2014 and was formed around father-and-son songwriting team Dan and Cory Spivey. Tickets are $10 and can be purchased at www.flatironcrossroads.com.