Sir Elton John voiced his support for Sir Keir Starmer in a video message played to hundreds of cheering Labour supporters on Saturday.
The singer sat next to her husband, David Furnish, in a video message that was nearly drowned out by applause during a supporters' rally in Westminster.
In his message, Sir Elton said: “It breaks my heart to see the hopes of Britain's next generation of creative talent being trampled and destroyed by bureaucracy and red tape.
He continued: “That's why we're backing Keir and the Labour Party to win this election. There is only one choice: let's help break down the red tape that prevents artists from thriving and contributing to the future success of this country. Let's show the world what a creative, thriving and forward-thinking country Britain can be.”
The critically acclaimed musician told everyone: “Let's cheer on the Labor Party for victory on the Fourth of July.”
Actors Kit Harington and James Norton and musician Beverley Knight were also among the celebrities to support Labour in the general election.
The event in Westminster featured video messages from each of the candidates in an attempt to rally support in the final days before the vote.
Game of Thrones star Harrington said he would vote for Labour because he feels the party has the “practical plan” needed to tackle the climate crisis.
“The situation is too unstable to afford another 14 years of Conservative power,” he said.
Taking to the stage, Starmer called on voters to give him a “clear mandate” to govern and warned Labour that apolitical apathy risked giving Rishi Sunak another five years in power.
Senior Conservative leaders have repeatedly suggested Labour is heading for a landslide victory, with Sunak's party fighting to protect as many of its MPs as possible to form an effective opposition.
But in a sign that Labour is concerned about complacency spreading among potential supporters, Sir Keir said they must motivate people who are disillusioned with politics to vote to ensure a “democratic reckoning” on Thursday.
“That's the last furlong, that's the last mile, the final stretch and the hardest mile,” said Sir Keir, wearing a white shirt with his sleeves rolled up.
He added: “The British people want change but their hopes have been largely dashed. We need to reassure people that change is possible – and above all, we need to persuade them to support change.”