From Arnold Brilhart's interview
Arnold was asked about his recordings with the Dorsey Brothers and told the interviewers following.
In 1924, Arnold was with the California Ramblers when the Dorseys auditioned for the Ramblers. Here is what Arnold said, "Jimmy had a nanny goat vibrato which he tried to change later on."
Arnold also talks about Bing, but, unfortunately, Star Dust was not brought up, either in part 1 or part 2. I don't mean to imply that Brilhart was part of the Bing's recording of Star Dust!!