American Idol runner up Adam Lambert has admitted that he is unsure about joining rock band Queen.

The group’s guitarist Brian May has said that he would love to work with Adam but the singer is unsure that he could commit to the band full time Pop Eater reports.

He said: “How do you say no to being in Queen? I mean, that’s unbelievable. But at the same time, I do have my own thing to do right now, and that’s my goal.”

Lambert says that he is concentrating on producing his first album and “could try to do both”.

He also gave a list of people that he would love to work with on his upcoming release:

“Madonna would be amazing,” he said.” I’d love to work with Madonna – I think she’s a genius. She has great ideas. Lady GaGa is brilliant. She’s got her finger on the pulse. She’s the hot thing right now. Katy Perry’s amazing, absolutely amazing.”