Adam Lambert was performing at the Kennedy Centre Honours on December 26, 2018 when he paid tribute to the legendary singer with his own take on her classic song 'Believe', and moved the pop diva to tears in the audience.

Extraordinary moment Adam Lambert brought Cher to tears with mournful cover of dance hit 'Believe'

Brian May became a global guitar icon with Queen, but it could've been a very different story.

Brian May pays tribute to beloved dad who gave blessing to pursue Queen career

Footage shows Freddie Mercury singing a Hungarian folk song to Mary Austin in 1986

Queen: Freddie Mercury sings to 'soulmate' Mary Austin in touching footage from 1986 - video

The Freddie Mercury Tribute Concert was watched by an estimated half a billion people worldwide. (Photo by Neil Leifer/Sports Illustrated/Getty Images)

New miniseries to mark 30th anniversary of Freddie Mercury Tribute Concert

Freddie Mercury appeared gaunt in his final music video 'These Are the Days of Our Lives'

Watch the heartbreaking final video footage of Freddie Mercury

Elvis and Bohemian Rhapsody with Brian May

Brian May says Elvis deserves to be 'portrayed with love' in new biopic

Marvin Gaye / Ed Sheeran

7 times artists sued others for copying their music

Freddie Mercury and Stanley Tucci

Stanley Tucci shares a throwback picture where he looks EXACTLY like Freddie Mercury

Adam Lambert, who would go on to perform sold-out stadiums across the world as the lead singer of one of history's most famous and successful bands, waited nervously in front of the judges as they held his fate in their hands.

When unknown Adam Lambert sang 'Bohemian Rhapsody' at TV audition and nearly didn't get through

Freddie Mercury had some iconic shoes to fill. And Adam Lambert knew it.

Adam Lambert confesses fear of following Freddie Mercury before first full Queen concert

Freddie Mercury and his parents

Who were Freddie Mercury's parents? Queen singer's family explained

Rami Malek in Bohemian Rhapsody

Does Rami Malek sing in Bohemian Rhapsody? The Freddie Mercury vocals explained

Rami Malek

Rami Malek facts: Bohemian Rhapsody actor's age, wife, twin brother and films revealed

Aaron McCusker as Jim Hutton

Who is Jim Hutton? Freddie Mercury's lover played by Aaron McCusker in Bohemian Rhapsody

Gwilym Lee

Gwilym Lee facts: Bohemian Rhapsody actor's age, height and career revealed

John Reid

Who is John Reid? Queen and Elton John manager in Bohemian Rhapsody and Rocketman

Brian May surprises fans

Queen's Brian May surprises fans with unannounced guitar solo at We Will Rock You tour return

Queen at the 1990 Brit Awards

Remembering Freddie Mercury's final public appearance at the 1990 Brit Awards