On Jan. 29, 2021, Christman Opera Company is set to present the newest work from composer Theodore Christman, titled “The Impresario and the Dueling Divas.” The cast includes soprano Teresa Castillo as Heidi Highmore, mezzo-soprano Madison Marie McIntosh as Lola Lowell, and tenor John Viscardi as Derek Schaus; pianist Eve Queler provides the previously recorded accompaniment. The opera is based {…}