(Alberta Rose Theatre, 3000 NE Alberta) The players of the Oregon Symphony are unquestionably the hardest working musicians in town, and any moron who says otherwise can blow it out their skinny-jeaned ass. Case in point: Greg Ewer. When this fiddler isn’t tearing it up with our orchestra’s outrageously tight string section, he’s busy leading 45th Parallel, one of Rip City’s most consistently impressive small-scale classical outfits. In addition to his technical mastery and emotional depth, Ewer also has a knack for putting together magically eclectic programs; tonight’s smorgasbord of virtuosity not only includes the 45th Parallel quartet, but also performances from brilliant percussionist Sergio Carreno, the Oregon Symphony’s chief trumpeter Jeff Work, beatboxer Gabe Gleason, and local composer Kenji Bunch, who proves once and for all that, yes, it’s quite possible to shred on a viola. The other half of the show belongs to Jackstraw, a kickass bluegrass group featuring the dreamy twang of Jon Neufeld’s guitar. And I’ve got your fucking vegan icing on your goddamned gluten-free cake right here: The gig goes down at the Alberta Rose Theatre, so all you pathetic lushes will finally be able to listen to classical music and sip the night away.