Laura Veirs is one of a great many thoughtful singer/songwriters working today, but she has distinguished herself with a crystalline, albeit nasally singing voice and light, ethereal melodies. Her albums, the most recent being 2007's Saltbreakers, offer up songs rich in natural imagery all wrapped up in a swirly, elegant production. Unfortunately, stripped of instrumentation, the songs reveal their irksome qualities. Playing a solo acoustic set at the Echo, Veirs sang beautifully and proved herself......