Bob Dylan, on the death of Levon Helm.
From a list of links at that link, I see that Rolling Stone once rated Levon Helm the 91st greatest singer of all time. From the explanation why:
Since Papa Garth Hudson didn't really sing, I always felt that, vocally, Levon was the father figure in the Band. He always seems strong and confident, like a father calling you home, or sometimes scolding you. The beauty in Richard Manuel's singing was often the sense of pain and darkness he conveyed. Rick Danko had a lot of melancholy to his voice as well, but he could also be a little more goofy. They were all different shades of color in the crayon box, and Levon's voice is the equivalent of a sturdy old farmhouse that has stood for years in the fields, weathering all kinds of change yet remaining unmovable.I don't follow the bands today. Do they still have bands where different singers sing differently?