Adam Lambert and British rock group Queen will perform together at four concert dates this summer, a collaboration Roger Taylor has described as “fireworks.”

Queen currently includes guitarist Brian May and drummer Taylor. Taylor and May formed the band Smile, which Freddie Mercury altered to Queen when he joined. Mercury died in 1991 of complications due to AIDS.

While a July 7 performance at Sonisphere 2010 has been canceled, Lambert and Queen will perform together at a June 30 show in Moscow's Olympic Arena, and a show with Elton John is also under consideration. They'll also perform two shows in July at the Hammersmith Apollo to provide “some alternative … for some of the the people who had bought tickets” to the now-canceled Sonisphere date, Taylor told Billboard.

Speaking to Yahoo!'s Reality Rocks music blog, Taylor described the collaboration with a single word: “Fireworks!”

May added: “Something different. [Lambert] has an extraordinary voice, there's no way you can get around that – whether you love him or hate him. He's extraordinary. So we'll be exploring new ways to do things. We don't like to just reproduce what we did before; we like to move on and try new ways of doing stuff. So it will be exciting!”

(Related: Adam Lambert performs on Jimmy Kimmel Live!)