Back in 2005, Umphreys McGee and Yonder Mountain String Band toured together with the Big Summer Classic. Ever since then, Brendan Bayliss and Jeff Austin have maintained a musical relationship, offering up occasional performances, including an acoustic duo set on Jam Cruise 5. In late January, Bayliss and Austin, who have been working on a studio recording on and off for some time now, will perform two Colorado dates. On January 25, the pair will appear in Denver at the Walnut Room and then on the 26th will move to Boulder for a show at the B.Side Lounge. These gigs likely will draw on their band’s respective catalogs but some new material is promised as well.