SETH GLIER The Trouble With People sethglier.com The 20-year-old Seth Glier has already earned a respectable reputation in the expansive Northeast music scene, having shared stages with the likes of John Mayer, Martin Sexton, Erin McKeown and Cheryl Wheeler. It’s small wonder, seeing as his earnest style brings to mind such warmly familiar singer-songwriters as James Taylor, Elton John and Cat Stevens—and is abetted by a voice that soars several...