Two of America’s greatest living guitar-picking bluesman team up for a rare duo performance that’s sure to please acoustic blues lovers. Jorma Kaukonen (Hot Tuna, Jefferson Airplane) recently released a solo CD on Red House Records, and David Bromberg is one of the finest guitarists and showmen of his generation. Popular demand has them doing two shows here—at 5 p.m. and 9 p.m. January 31, The Cedar, Minneapolis, thecedar.org.