of, relating to, or shaped like a triangle; having three angles; triangular. 2. Crystallography. having threefold symmetry. Origin of trigonal.
An online survey conducted in the U.S. points out that the most popular music genre in the U.S. is rock, with 40 percent of respondents choosing this option. The second and third most listened to music genres are oldies and country respectively, while hip hop/rap is favored by a smaller niche of American listeners.
For other uses, see Pop Song. Pop music is a genre of popular music that originated in its modern form in the United States and United Kingdom during the mid-1950s. The terms popular music and pop music are often used interchangeably, although the former describes all music that is popular and includes many styles.