Leonard Cohen, the solo performer, was revered as a writer more than a performer. This makes sense as his greatest hits were covered by others who gained success from his songwriting. In the ’60s, Judy Collins covered his song, “Suzanne,” and it garnered attention for the fledgling Cohen. Much later, Collins’ was interviewed by Bill Moyers about this song. The reference point (for us) was a 1976 performance with Cohen. The problem is that–as talented as Collins is–nothing can compare to the raw invocation of his regret at giving the song away. So. One of...