There’s something beautifully weird about watching Guster as the lights come on around the harbor. Like, it shouldn’t work — this quirky little college rock band from Massachusetts playing songs about elevators and Ramona while sailboats drift by and a crab cake vendor yells over the fence — but it does. It works perfectly. Baltimore’s always had that rough-around-the-edges charm, and Guster’s always leaned into being just left-of-center. Put the two together and you’ve got the makings of something quietly electric (as seen recently at Pier Six Pavilion when the band opened Barenaked Ladies).