Ann Ronell , Cowan 's wife , wrote the additional music that replaced much of Weill 's material .
However , Martin became pregnant and Pickford sold the rights to Lester Cowan at Universal in August 1947 .
Ann Ronell , Lester Cowan 's wife , wrote the additional music that replaced much of Weill 's material .
However , Martin became pregnant and Pickford sold the rights to Lester Cowan at Universal in August 1947 .