Umphrey’s McGee guitarist Brendan Bayliss and former Yonder Mountain String Band member Jeff Austin will once again come together as 30db for their third annual holiday show in Chicago next month, JamBase confirms.

The duo began the side-project in 2010, when they recorded their lone album, One Man Show, and toured sporadically until 2012. 30db returned in December 2015 with a couple of Chicago shows in what has now become a holiday-season tradition. Check out the early show from that first 2015 performance below.

This year’s show will take place at Chicago’s Martyr’s on December 20. Tickets go on sale tomorrow, November 17, at 10am CST here.