Joseba Tapia Usabiaga, born in 1964 in Lasarte-Oria, Guipuscoa, Spain, is a Basque musician known for his role as a player of the Trikitixa, a diatonic accordion. He began his musical journey by forming the group Tapia eta Leturia with Xabier Berasaluze Leturia, who played the pandero, a traditional Basque tambourine. Their collaboration marked the start of Tapia's career in folk and rock music. In 1999, he released his debut album Québec: hamalau kantu independentziarako. Throughout his career, Tapia continued to release notable albums such as Agur Intxorta maite (1936-37 gudako kantuak) in 2001 and Real politik in 2006. His later works include Eta tira eta tunba, released in 2010, Mintzak Ahoz Goran - Oroiteria in 2017, and Egon Edo Ez Egon in 2021. Tapia's contributions to Basque music have left a lasting impact, blending traditional folk elements with rock influences.