Jul 01 2012 Jeff Mattson of DSO Jam’s With DeadBeat After DSO Show At The Wang! A big ‘thank you’ goes out to Jeff Mattson from Dark Star Orchestra who stopped by after their show in Boston on Friday June 1st to sit in on a few songs with DeadBeat. Jeff and Brian traded some smokin’ leads on Deal and Sugaree. Jeff played and sang Tangled Up In Blue and he ended with a fine Scarlet Begonias into Fire on The Mountain then into Eyes. A memorable night for all us in DeadBeat.