Jan and Dean were a rock and roll

Rock and roll

Rock and roll is a genre of popular music that originated and evolved in the United States during the late 1940s and early 1950s, primarily from a combination of African American blues, country, jazz, and gospel music...

 duo

Duet (music)

A duet is a musical composition for two performers. In classical music, the term is most often used for a composition for two singers or pianists; with other instruments, the word duo is also often used. A piece performed by two pianists performing together on the same piano is referred to as...

, popular from the late 1950s through the mid 1960s, consisting of William Jan Berry (April 3, 1941 – March 26, 2004) and Dean Ormsby Torrence (born March 10, 1940). They became associated with the vocal "surf music

Surf music

Surf music is a genre of popular music associated with surf culture, particularly as found in Orange County and other areas of Southern California. It was particularly popular between 1961 and 1965, has subsequently been revived and was highly influential on subsequent rock music...

" craze that was popularized by The Beach Boys.
Jan Berry and Dean Torrence, both born in Los Angeles

Los Ángeles

Los Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, began singing together as a duo

Duet (music)

A duet is a musical composition for two performers. In classical music, the term is most often used for a composition for two singers or pianists; with other instruments, the word duo is also often used. A piece performed by two pianists performing together on the same piano is referred to as...

 after football practice at University High School.