In late 1977 and early 1978 Robyn apparently played bass a few times with the Users, a Cambridge-based punk band. He's credited on a release that includes "Bad Decision". The Soft Boys and the Users co-headlined a few gigs around this time at Alex Wood Hall, The Nashville and possibly other venues. Per durianapocalpyse.com the Soft Boys also played Bad Decision at a rehearsal in 1978 or '79. Listen to Bad Decision on YouTube