Concerti is twenty-six strings vibrating: A string quartet—two violins, a viola and a cello—with a bass added on the bottom end, fronted by the nylon-string acoustic guitar of Gene Bertoncini. A top ...

At 70, guitarist Gene Bertoncini continues to make standards and classics breathe and shimmer, inviting listeners to experience them in new ways. On Concerti, his considerable skill at navigating a ...