A term used to describe music which has been written under irregular and commonly complex conventional restraints. Math has been dubbed as it is due to its use of essential numbers to fully understand the order of the compositions. Much of this genre is written in uncommon time signatures or has been infused with advanced chains of notes that are ruthlessly calculated and plotted in array. As such, "Math" is a music for mathematicians; both an art and a science.

In other sense, context: it is genre/theme of (often also educational; edutainment) videos, and have nothing with music, but is content/context of video; not to be confused with music genre of the same, similar genre - see above, or maths.