...Bob is/was always on the move, always changeable and capable of being transformed.  Identity:  not an is, not something you simply own.  Identity:  a becoming-thing, a something you shape and reshape.  Bob was a shaper looking for ways to carry on, persist, keep at it; he was about his own ontology, and how music, work, all-known and disparate worlds, cohorts, the/his past, his/the present, all came/might have come into being All-Together.  Now.  
Elaine Barkin (in Open Space Magazine, issue 7, fall 2005)

So even though I never met Bob...I was really saddened by the news, because it's hard to imagine his sensibility not in the world...because knowing that this expansive yet (for some reason what I imagine to be) modest and sensitive thinker and musician was in it, was a strong and it seemed necessary counterforce to much else ghat e come to "need,"  ...the specific presence of others, who are unmet, but "there."  For me he is such a one.  Arthur Margolin (in Open Space Magazine, issue 7, fall 2005)