Versatile Ann Blyth, the actress-singer who has scored a success in all mediums of the entertainment world will star in "Carnival" the opening musical production of Valley Music Hall which makes its debut September llth. Provo will be represented by newcomers to the resident company of singers and dancers by Rolondo Gonzales, a native o Arequipa, Peru. Since coming to the Brigham Young Univer sity in Provo, where he studies under the direction of Brand Curtis, director of the Opera Workshop. He has performed lead tenor roles in mapor- oper as. He plans to continue hi studies at BYU majoring in music.