At the last minute we decided to go to the Crosby, Stills and Nash a few blocks up from where we live. I had not seen them since 1997 and it was as wonderful as it was 12 years ago. Not surprising, the audience (and the performers) had gray hair and clearly have been fans since Woodstock, like me. We were in the second section back from the stage and the lights were dim, so I was sketching by stage-lights.