The hugely talented singer-songwriter has been performing with Queen for many years now; singing the hits made famous by Freddie Mercury before his death in 1991.
A new documentary film, The Show Must Go On, last night showed Lambert opening up on his first gig with the group: in front of an almighty crowd in Kiev.
He revealed that he would frequently glance over at keyboard player Spike Edney for an indication of whether or not he was supposed to start singing.
“I had a lot of help,” he smiled. “Spike, who was on keys, I kept looking at over and over again.
“‘Am I supposed to come in here?’ ‘How long’s the guitar solo?’ ‘Is it my turn?’”
Spike added: “Because of his stage training, he was quite happy to take cues.
“He used to just check in with me – I’d give him a [nods] yes if it was right, and a [shakes head] no if it was wrong, meaning ‘wait’.
“He looked at me and I’d go, ‘no, not yet, don’t sing that bit’.”
Lambert reflected: “It was fun, it was thrilling.
“It was what I loved most about being a vocalist: the adrenaline, the thrill of something could possibly go wrong.
“I like that! I like the danger in it.”
Speaking yesterday in support of the documentary, Queen’s Roger Taylor was asked what Mercury would have thought of Lambert.
“I think he would have absolutely loved Adam,” Taylor told Good Morning America.
“I think he’d have gone, ‘huh… he can sing.’”
Joking over his efforts to not use an expletive, Taylor quipped: “It’s early in the morning there, so I’d better be polite!” Scroll down for the full video.
The band’s legacy is undeniable, and they recently reached a whole new audience with their massively successful biopic movie Bohemian Rhapsody, starring Rami Malek.