Gallaecia or Callaecia, also known as Hispania Gallaecia, was the name of a Roman province and an early Mediaeval kingdom that comprised a territory in the north-west of Hispania (approximately present-day northern Portugal, and León (province), Asturias and Galicia in Spain). The most important city and historical capital of Callaecia were the towns of Bracara Augusta,^{[citation needed]} the modern Portuguese Braga, the administrative centre of the Conventus bracarensis, and Lucus Augusti, the modern Galician Lugo, the administrative centre of the Conventus lucensis.

The Romans gave the name Gallaecia to the northwest part of the Iberian peninsula (north of Portugal, Galicia, Asturias, Leon and Cantabria). The Gallaeci (Greek Kallaikoi) tribe (or Gallaecians) Gallaeci lived in the Douro Valley. One of their towns, Cale become the Roman town of Portus Cale, today's Porto.

The wild Gallaic Celts make their entry in written history in the first-century epic Punica of Silius Italicus on the First Punic War:

Luar na Lubre is a Celtic music ensemble from Galicia, Spain.

Luar is Galician for moonlight; lubre is a magical forest in which the Celtic druids cast their spells.

During its career, this musical group has spread Galician music and culture. The band became famous worldwide after Mike Oldfield took interest in their music. Oldfield fell in love with their song "O son do ar" (The sound of the air, composed by Bieito Romero). Oldfield's cover is on his Voyager album, entitled "Song of the Sun". In 1992 he offered help in their worldwide tour. Their tour together was called Tubular Bells 3.^{[dead link]} Now it is one of the most famous groups from Galicia. Their first singer Rosa Cedrón is also featured with Mike Oldfield in some songs from his live concert at Horseguard's Parade, near St James' Park, London. Rosa Cedrón left the band in 2005 and Sara Vidal became the new singer. In 2010, the group's leader, Bieito Romero, said the group was "fully fit".

The group recorded a version of Gerdundula by Status Quo.