Just a quick dissent from Norm’s opinion that the results of his poll show that the Beatles, the Rolling Stones and Bob Dylan constitute a “collective Sir Donald Bradman of their sphere”.
The point about Bradman is that almost everyone agrees that he was the best (see, inter alia, details of the Wisden survey not so long ago). To have about half your survey nominate each of three bands when you’re allowed to nominate up to ten isn’t remotely the same kind of thing, either individually or collectively.
Anyway, something’s gone radically wrong with a poll that can put Led Zeppelin in spitting distance of Elvis Presley, at the same time as it keeps Elvis out of the top three. I blame the voters.