Is there a crueller vocal teacher than Lady Wolf? Who knows, but I think today's student strongly doubts this. Naked and fixed, with arms and legs spread wide, he humbly awaits his fate while the mistress inspects him. She makes him sing by squeezing his balls. Of course, this is not the most melodic and beautiful musical instrument, but Lady Wolf knows many techniques to get what she wants: squeezing, spanking, pulling down, kicking and busting. Dominatrix is virtuoso, she achieves the desired sound by tying the long-suffering nuts sack with a rope and pulling it strongly. Sing, boy, sing for her!