Adam Lambert Fronts QUEEN at UK's Sonisphere Festival Tonight, 7/7

According to USA Today, American Idol alum Adam Lambert will front the legendary rock band Queen when the group headlines England's Sonisphere Festival tonight, July 7th. 

Lambert confirmed the news on his Twitter account posting "I have been invited by Queen to sing one very special concert!" Adam tweeted Monday. "Sorry to be coy about the details the past few weeks, but I made a promise to keep it under wraps as best I could. Gonna be a surreal night!"

The festival is set to take place at Knebworth Park, the arena where the band's original frontman, Freddie Mercury performed his final concert in 1986. Mercury died five years later in 1991.

Via press release, Queen guitarist Brian May commented, "Judging by my incoming mail, this decision will make a lot of people very happy. It's a worthy challenge for us, and I'm sure Adam would meet with Freddie's approval! And what better place to revisit, and walk those emotional paths than Knebworth? It will be a rush."

During Lambert's finale appearance on the 2009 season of American Idol, the singer performed 'We Are the Champions' with some of the surviving members of Queen. The singer also performed with the band at last year's MTV Europe Awards.