Cro-Mags is one of the fundamental names for the birth of the so-called 'crossover thrash'
subgenre, which synthesized thrash metal and hardcore punk. Cro-Mags' first full-length,
The Age of Quarrel, released in 1986, is one of the first albums where the unadulterated
energy of hardcore punk is filtered through the aggression and the fury of thrash metal.