What do you get when you book a show headlined by a son of Allman Brothers’ founder Gregg Allman, leading his own six-piece band, while the opener features a set by a son of original Allman Brothers’ guitarist, Dickey Betts? Well, the patriarchs may have had a falling out, but we’re going to find out whether the sons can make things right. The night reportedly will close with a 30-minute set of Allman Brothers classics. 8 p.m. $20.50 to $23. thenationalva.com.