Musicologist Walter Everett writes that the song's "most commented-on feature" is its considerable length, at 7:11. Like McCartney, Martin was concerned that radio stations would not play the track because of the length, but Lennon insisted: "They will if it's us." According to Ken Mansfield, Apple's US manager, McCartney remained unconvinced until Mansfield previewed the record for some American disc jockeys and reported that they were highly enthusiastic about the song. "Hey Jude" was one second longer than Richard Harris's recent hit recording of "MacArthur Park", the composer of which, Jimmy Webb, was a visitor to the studio around this time. According to Webb, Martin admitted to him that "Hey Jude" was only allowed to run over seven minutes because of the success of "MacArthur Park". Pleased with the result, McCartney played an acetate copy of "Hey Jude" at a party held by Mick Jagger, at Vesuvio's nightclub in central London, to celebrate the completion of the Rolling Stones' "Beggars Banquet" album. The song upstaged the Stones' album and, in author John Winn's description, "reportedly ruin" the party.