Last year, New Mastersounds guitarist Eddie Roberts and Greyboy Allstars keyboardist Robert Walter played a handful of shows with Lettuce/Break Science drummer Adam Deitch. In March, California-based Roberts and Walter will come together with Dirty Dozen Brass Band drummer Jermal Watson. This version of the Eddie Roberts and Robert Walter Trio will perform at San Francisco’s Boom Boom Room on March 2 and 3. Greasetraps and DJ K-OS will open both nights.