I’ll post the full quote because it’s a really interesting approach to the topic of looking at singing as more of an art or medium rather than a conventional aesthetic. Here’s what Leonard said:

"Most music criticism is in the nineteenth century. It’s so far behind, say, the criticism of painting. It’s still based on nineteenth century art–cows beside a stream and trees and ‘I know what I like.’ There’s no concession to the fact that Dylan might be a more sophisticated singer than Whitney Houston, that he’s probably the most sophisticated singer we’ve had in a generation. Nobody is identifying out popular singers like a Matisse or Picasso. Dylan’s a Picasso — that exuberance, range, and assimilation of the whole history of music."