1) Fusion music genre 
Mathcore is a rhythmically complex and dissonant style of metalcore. It has its roots in bands such as Converge, Coalesce, Botch, and The Dillinger Escape Plan. The term mathcore is suggested by analogy with math rock. Both math rock and mathcore make use of unusual time signatures. Math rock groups such as Slint, Don Caballero, Shellac, and Drive...