Which singer played Ally in 'A Star Is Born' (2018)?

Who was the first Black performer to win an Academy Award, for 'Gone with the Wind'? Which actor won Best Actor Oscars in consecutive years for 'Philadelphia' and 'Forrest Gump'? Which actor won the Academy Award for Best Actor for 'The Whale' (2022)? Which actress won the Academy Award for Best Actress for 'Everything Everywhere All at Once'? Who played Elvis Presley in Baz Luhrmann's 'Elvis' (2022)? Who played Paul Atreides in 'Dune' (2021)? Who played Barbie in 'Barbie' (2023)? Who played Ken in 'Barbie' (2023)?