As Screaming Mimi, Gold's enhanced vocal cords were bionically altered and enhanced by technicians in the employ of Roxxon. As such, she had the ability to generate a high-pitched, earsplitting, earth-shattering supersonic scream of great volume and for a variety of effects. She was capable of emitting a sound equivalent in decibels to the noise of a jet engine passing 5 feet from one's ear. She has perfect pitch, the ability to hear in her mind the correct frequency for every musical note on the scale. Every note on the scale she screams induces a different effect upon those who hear it. Low C causes low-level anxiety and shortness of breath, D causes high-level anxiety and panic attacks, E causes dizziness and vertigo, F causes nausea and stomach cramping, G causes severe headaches and fatigue, A causes blindness, B causes euphoria and eventual stupor, and high C causes the listener to visually hallucinate. By rapid oscillation between two notes, she can combine effects. In addition, she could produce certain vocal effects in harmony with Angar the Screamer, such as specific sustained illusions. Her nervous system is immune to her own vocal powers. At the upper limit of her scream's power, it could actually damage physical objects. Faced with the death of her lover, Angar the Screamer, she screamed for 43 minutes in a fit of hysteria, creating a large blast crater and literally liquefying nearby plant life. This outburst nearly destroyed her vocal cords, and depowered her briefly until she used new technology to assume the Songbird alias. During a later encounter with the Hand, Songbird unintentionally reactivated her incredibly strong supersonic scream ability.