Garth Brooks will shed his twang and assume an alter ego that will have him singing pop songs for an upcoming movie. Brooks said he will play doomed fictional pop star Chris Gaines in “The Lamb,” scheduled for release next year, the Los Angeles Times reported. Brooks will also release a collection of the fictional artist’s greatest hits in September. Fans of the 37-year-old singer may not recognize his voice on the 14-track album. He reportedly hides his twang, sings in a higher pitch and uses different cadences.