Acoustic rockers Rodrigo y Gabriela have always let their eloquent guitars do their talking. No longer.

In recent appearances, Rodrigo Sanchez has tried something special, using a soft voice to sing the lyrics of Radiohead's "Creep." Thousands of surprised fans joined in at a recent concert in Los Angeles.

Asked if he might start doing that more often, Sanchez tells The Associated Press that it's possible, saying "One never knows."

Sanchez says he's feeling more confident with his voice after a few timid starts. He says that he feels "more relaxed" as the audience joins in.

The Mexican duo famed for flamenco-style covers of heavy metal is on tour promoting a new album called "9 Dead Alive" featuring fresh works inspired by historical figures including Harriet Tubman and Fyodor Dostoyevsky.