scratch that noise

A phrase that indicates that someone dislikes the music currently being played. Usually said to the beat of the music.
Accompanied with a gesture: On 'scratch', put your right pointer finger on the left side of your neck. On 'that', move the finger to the center of your neck, and on 'noise', point to the person playing the music. This gesture resembles removing the needle from a turntable.

Person A: Alright, now for the sounds you all have been waiting for!
(country music starts playing)
Person B: Scratch that noise!