How is mathematics related to music?
Probably the closest connection between music and math is that they both use patterns. Music has repeating choruses and sections of songs and in math patterns are used to explain and predict the unknown. ... Research has even shown that certain pieces of music end up being more popular due to their mathematical structure.
What math is used in music theory?
Expanding on the methods of musical set theory, some theorists have used abstract algebra to analyze music. For example, the pitch classes in an equally tempered octave form an abelian group with 12 elements.