The opera house is alive with the hum of the audience, but in a dark corner, two siblings find themselves in a private, forbidden symphony. The sister, a raven-haired mezzo-soprano, is dressed in her costume, her curves barely contained by the tight, red velvet dress. Her brother, a handsome baritone, leans in close, his hand resting on her thigh. As the music begins, so does their dance of desire. He traces his fingers along her leg, making her shiver, as she leans in, her breath hot on his ear, whispering words of longing and lust to the rhythm of the opera's haunting melody.