Adam Lambert has opened up about what it’s like performing with Queen.Lambert, a former contestant on American Idol, joined Queen in 2012 and took on the role of replacing the group’s former late frontman, Freddie Mercury.In a new interview with The Times, Lambert spoke about the pressure of the role, saying that he never wanted to do an “impersonation” of Mercury.Lambert said: “I knew I didn’t want to do an impersonation. Freddie and I are different.