The term post-rock was coined in 1994 and soon used to describe a diverse group of bands that shared "a penchant for drifting melodies and the desire to expand beyond established rock boundaries". As this movement swelled, bands from post-hardcore and experimental backgrounds began to incorporate its tendencies of "ambience, offbeat experimentation, downcast melodies and psychedelia" into metal. The two genres further converged through the influence of post-rock bands such as Mogwai, Godspeed You! Black Emperor, and Lift to Experience who shared metal's emphasis on loudness.