Musical quartets

A string quartet is a musical ensemble of four string players – two violin players, a viola player and a cellist – or a piece written to be performed by such a group.

The Brazilian Guitar Quartet was formed in 1998 to interpret the repertoire for four guitars and make transcriptions of works from diverse periods and styles.

Zapato 3 is a Venezuelan rock band (Rock en Español) that was active from 1984 to 1999.

Siissisoq is a Greenlandic hard rock jazz metal band, formed in 1994 in Uummannaq.

Mortem is a death metal band formed in 1986 in Lima, Peru.

Four Jacks was a Danish vocal quartet, founded in 1956 by Poul Rudi and Otto Brandenburg.

Athena & Robikerottsu (アテナ&ロビケロッツ, "Athena and Robocarrots") was a Hello! Project unit consisting of Niigaki Risa, Mitsui Aika, Nakajima Saki, and Okai Chisato.

Sanatorium is a thrash metal band from Skopje, Republic of Macedonia.

Pamyua (/ˈbʌmjoʊ.ə/ BUM-yoh-ə) (literally: "its tail" in Yup'ik from pamyuq "tail of animal or kayak; chorus of song; upper stern-piece of kayak") is a Yupik musical group from Anchorage in the U.

Agents of Good Roots was an American rock band from Richmond, Virginia.

Los Fronterizos is an Argentine musical band consisting of four men.

Dam are an English extreme metal band from London, formed in 1997.

Green Lizard is a band from Tilburg, Netherlands that plays rock and roll, with influences from grunge, punk rock, hard rock and metal.

Loudblast is a Death/Thrash band that pioneered the genres in France, and one of the most important French metal bands of the 1990s.

Atomic Swing is a Swedish pop rock group formed in 1992.

Eternal Majesty is a French black metal band.

The Yacht Club Boys was a quartet of American comic singers, popular in the 1920s and 1930s: Charles Adler, George Kelly, Billy Mann, and Jimmie Kern (later known professionally as James V. Kern).