This week on “Unnatural Acts of Opera,” a 1998 live performance of Gomes’ opera Maria Tudor conducted by Luis Fernando Malheiro. The heroine of this opera (based on a rather improbable play by dear Victor Hugo) is the Queen of England known to history as “Bloody Mary.” As depicted by Gomes, Maria is regal, highly conflicted and given to sudden plunges into open chest voice, which means that for Elaine Coehlo, the role is a natural. Hear Maria Tudor on Unnatural Acts of Opera