When looking on the history of Ancient Celtic music in Iberia :
Chant
Sallust mentions the Spanish custom of ancestral songs honoring their military deeds.[49] The recital of "barbaric songs" is reported for a member of the Celtiberian infantry during the battle of Cannae in 216 BC, as he was attacked by the Roman consul.[36] National songs are already attested by Tacitus for the Caledonians.[50] Livius reports Gallic war songs that were heard at the river Allia.
Percussion and dance
"Crotales (hand bells) made of bronze or wood as well as terracotta rattles are known since the Bronze Age, some of which came in the shape of birds.[35] Closed bells were sometimes built with a ring and could be strapped to the player's apparel. Weapons and shields—apart from their use for rhythmic noises on the battlefields—must have been widely adopted as percussion instruments, but the only sources in this respect are on the Gallaecian and Celtiberian culture: In his epic on the second Punic war Silius mentions the exotic songs of the Gallaecian military allies, to which they beat the rhythm on their shields.[36] Celtiberian weapon dances are reported for the funeral of Tiberius Sempronius Gracchus.[37] The most famous dances of Hispania however were performed by the Gaditanae, the women of Gades in Hispania Baetica,[38] which were so popular in Rome that special teachers from Spain were hired for Roman music education.[39] The dancers used hand clappers as an accompanying instrument, creating a lascivious dance similar to modern-day castanet performances. If the Celts used drumming instruments like the Roman tympanum is unknown, but very likely, because other forms of hand drums like the ceramic German Honsommern Drum, which was similar to the African djembe, are known since the Neolithic. A later Iron Age drum is the Malemort Drum found in the central French Corrèze region
