Vibrato is a great way to help pinch harmonics scream because it adds movement and intensity to the harmonic note, making it sound louder and more expressive. When you apply vibrato—by gently bending or shaking the string after producing the pinch harmonic—you create small fluctuations in pitch and tension. These fluctuations amplify the harmonic’s ringing, giving it a richer, more powerful “squeal” that stands out.

Without vibrato, pinch harmonics can sound thin or quick to fade. Vibrato keeps the harmonic alive longer and gives it character, helping it cut through the mix and grab attention—especially in rock and metal solos. Plus, vibrato adds emotion and style, turning a simple harmonic into a dynamic, screaming effect.