These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Breakaway Pop Hit: His "What a Wonderful World" and "Hello Dolly" introduced him to a younger generation that otherwise wouldn't have known who he was.
Broken Base: Critics and historians tend to favor Armstrong's 1920s and 1930s output over his later recordings, when he transformed more into a singer and an entertainer. The man himself dismissed this, because he was a much better musician later in life than in his earlier days.