Treebeard commented that she is in danger of going "Frank Herbert" with comments like this one that she made during her live web chat on Bloomsbury's website:
J.K. Rowling: I like this question, so I'll take it for my last.
Tess: What muggle song do you imagine would be played at dumbledores funeral
J.K. Rowling: Surely 'I did it my way' by Frank Sinatra.
Oh, surely not.