Brian May

This isn't the first time the president has used the classic rock legends' music.

Slash tells UCR why the Queen guitarist is one of his longtime heroes.

"Everyone is thinking twice about going there at the moment," the guitarist said.

"The stuff that we could bring to this would be stupendous," the guitarist says.

Watch their emphatic rendition of the Queen classic.

Guitarist had anxiety every time he presented his bandmates with new ideas.

There was an uncertain beginning and end, but in between, they crafted a hall of fame resume.

May fears that "the future is already forever changed."

Guitarist says people didn’t like the singer, and the singer didn’t like his own voice, as he explains how band pushed each other in the studio.

He hasn't appeared with the band since a single-song performance with Elton John in 1997.