Hey Jude was written for Julian Lennon because his parents, John and Cynthia Lennon, were going through a divorce. It was written to comfort him through the divorce since he was only 5 at the time. The song started out as "Hey Jules" because Paul McCartney's nickname for Julian was "Jules". Then it was changed to "Hey Jude" because Paul thought it would be easier to say "Hey Jude" rather than "Hey Jules".
The Beatles performed "Hey Jude" on David Frost's show in the U.K. in 1968.
There is debate here, whether "Hey Jude" is rock or pop. However, pop (as in popular music) is in the rock genre, so by transitive property is rock music.
"Hey Jude" is credited to Lennon/McCartney, the ballad evolved from "Hey Jules," a song Paul McCartney wrote to comfort John Lennon's son Julian during his parents' divorce.
The abum hey Jude
Hey Jude is in F major.
Hey Jude was created on 1968-08-26.
Hey Jude runs 7:04 mins
The Hey Jude Album was published in 1970
Paul McCartney sang the lead on 'Hey Jude'.
Hey Jude (song) was released on 26 August 1968.
Hey Jude by The Beatles