Bob Delyn a'r Ebillion are a folk

Folk music

Folk music is an English term encompassing both traditional folk music and contemporary folk music. The term originated in the 19th century. Traditional folk music has been defined in several ways: as music transmitted by mouth, as music of the lower classes, and as music with unknown composers....

-rock group from Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

, singing both in Welsh

Welsh language

Welsh is a member of the Brythonic branch of the Celtic languages spoken natively in Wales, by some along the Welsh border in England, and in Y Wladfa...

 and Breton

Breton language

Breton is a Celtic language spoken in Brittany , France. Breton is a Brythonic language, descended from the Celtic British language brought from Great Britain to Armorica by migrating Britons during the Early Middle Ages. Like the other Brythonic languages, Welsh and Cornish, it is classified as...

.

Fronted by the Prifardd

Prifardd

Prifardd, literally Chief Bard, is the Welsh title given to bards who have won either the chair or the crown in the National Eisteddfod of Wales.For a list of chaired and crowned bards, see Chaired Bards and Crowned Bards ....

 Twm Morys

Twm Morys

-Biography:Morys was born in 1961 in Oxford, a son to the author Jan Morris. He was brought up in Llanystumdwy and attended Ysgol y Llan, before attending boarding school in Shrewsbury at the age of seven...

, Bob Delyn a'r Ebillion played a major part in the Welsh folk revival of the early 1990s. Their music combines reggae

Reggae

Reggae is a music genre first developed in Jamaica in the late 1960s. While sometimes used in a broader sense to refer to most types of Jamaican music, the term reggae more properly denotes a particular music style that originated following on the development of ska and rocksteady.Reggae is based...

 and rock

Rock music

Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music...

 influences with more traditional Welsh folk

Folk music

Folk music is an English term encompassing both traditional folk music and contemporary folk music. The term originated in the 19th century. Traditional folk music has been defined in several ways: as music transmitted by mouth, as music of the lower classes, and as music with unknown composers....

 and roots

Roots revival

A roots revival is a trend which includes young performers popularizing the traditional musical styles of their ancestors. Often, roots revivals include an addition of newly-composed songs with socially and politically aware lyrics, as well as a general modernization of the folk sound.After an...

music; in many ways they were revolutionary within the Welsh-language music scene in doing this.