Sons of Bill on Saturday

In case your March 31 plans are not already split over the Kovacs & the Polar Bear show (at the Grey Eagle) and The Critters CD release party (at the Getdown) or the Booty Band (at the Orange Peel) or any number of other possibilities (it’s an exciting night), here’s a roots-rock band from Charlottesville, Va. worth checking out. Sons of Bill plays the Emerald Lounge at 10 p.m.