Our friends (L-R) Dick Bohme on the one-string bass, Dennis Avery on the dobros , Al Canali on guitar and Karen Hogness  on mandolin comprise Small Change.  One of the great benefits of living in Greenfield is the concert series held in the Energy Park on Miles Street  which  is only 5 minutes from our house. We found out about this concert series the morning that Small Change was to perform. Of course we were there. But we…