MathRock
Mathematical rock (at least – the matrix rock, Eng. Math rock) – the direction of rock music which arose in the late 80s. in the U.S.. Mathematical rock is characterized by complex, atypical rhythmic structures and dynamics, the sharp, often inharmonious riffs. Especially in rock music is the most common time signature 4 / 4. In the rock matrix most commonly used atypical dimensions, such as 7 / 8 11 / 8, or 13 / 8, or time signature change regularly throughout the composition.
The rhythmic complexity, which seemed to "mathematical" many listeners and music critics, gave the style its name taking shape. Music groups performing math rock can be classified as rock, progressive rock, heavy metal and punk rock, but these groups can never be classified as typical representatives of these styles. Lyrics and their performance usually does not occupy a central place in the matrix rock. Voice of vocalist is usually used only as Another sound effect or instrument in musical composition. In addition, many groups belonging to this style of performing all the instrumental music.