“I’ve got big dreams, baby,” Ellie Goulding chants on “Don’t Panic.” Delirium is confirmation that those dreams are coming true. Her third studio album is a roaring testament of spirit. She glides across slinky grooves with the precision of an Olympic skater on tracks like “On My Mind,” “Keep on Dancin’,” and “Something in the Way You Move.” And wait till you hear the primal “I Do What I Love,” where Ellie shows she can turn up with the best of them.