Wagnerian rock is a musical term originally coined by writer and producer Jim Steinman (to describe Meat Loaf's Bat Out of Hell trilogy of albums) referring to the merger of twentieth century rock and roll and nineteenth-century opera reminiscent of Richard Wagner and of Phil Spector's Wall of Sound. The term is sometimes used ambiguously in rock writing, referring to a bombastic Teutonic style, or fantasy lyrics. Artists and works described as Wagnerian include Patti Russo, Bonnie Tyler's Faster Than the Speed of Night, progressive metal band Savatage, Pandora's Box's Original Sin, and producer and songwriter Spector,progressive rock bands Pink Floyd and King Crimson; and German industrial metal band Rammstein.