Wiktionary
shock rock
n. (context music English) A genre of rock music typified by elements of theatrical shock value in live performances.
Wikipedia
Shock rock
Shock rock is an umbrella term for artists who combine rock music or metal with highly theatrical live performances emphasizing shock value. Performances may include violent or provocative behavior from the artists, the use of attention-grabbing imagery such as costumes, masks, or face paint, or special effects such as pyrotechnics or fake blood. Shock rock also often includes elements of horror.
Usage examples of "shock rock".
She heard her own breathing and Fitch's, felt a shock rock the ship and saw the audio reading jump.