Guernésiais, also known as Dgèrnésiais, Guernsey French, and Guernsey Norman French, is the variety of the Norman language spoken in Guernsey. It is sometimes known on the island by the semi-disparaging name "patois". As one of the Oïl languages, it has its roots in Latin, but has had strong influence from both Norse and English at different points in its history.

There is intercomprehension (with some difficulty) with Jèrriais-speakers from Jersey and Norman-speakers from mainland Normandy. Guernésiais most closely resembles the Norman dialect of La Hague in the Cotentin Peninsula (Cotentinais).

Guernésiais has been influenced less by French than has Jèrriais, but conversely has been influenced to a greater extent by English. New words have been imported for modern phenomena "le bike", "le gas-cooker".

There is a rich tradition of poetry in the Guernsey language. Guernsey songs were inspired by the sea, by colourful figures of speech, by traditional folk-lore, as well as by the natural beauty of the island. The island's greatest poet was Georges Métivier (1790–1881), a contemporary of Victor Hugo, who influenced and inspired local poets to print and publish their traditional poetry. Métivier blended local place-names, bird and animal names, traditional sayings and orally transmitted fragments of medieval poetry to create his Rimes Guernesiaises (1831). Denys Corbet (1826–1910) was considered the "Last Poet" of Guernsey French and published many poems in his day in his native tongue in the island newspaper and privately.

Marvin Goldstein (born 1950) is an acclaimed professional pianist and performer.

Goldstein began musical training at age 9, and by 18 was awarded a music scholarship to Tel Aviv University School of Music, Tel Aviv, Israel. He continued his formal training at the famed "Mozarteum" of Salzburg, Austria and completed his education with Bachelor and Master of Music degrees at Florida State University in Tallahassee, Florida. On June 2, 1985, Goldstein joined The Church of Jesus Christ of Latter-day Saints. Goldstein was Jewish before he joined the LDS Church. He has served in several callings in the LDS Church, including as a member of a high council and a counselor in a bishopric.

Goldstein's wife had joined the LDS Church in 1981. One of the people who worked with him in teaching him of the faith before he joined the Church was Robert Millet.

Goldstein and his wife Lenae are the parents of one child.

Goldstein has traveled extensively, performing in such places as Jerusalem, Anchorage, Oahu, Copenhagen, London, and throughout Canada and the continental United States. He has also been the headline talent for tour groups ships sailing on the Caribbean Sea, the Mediterranean Sea, and the Pacific Ocean.