Laiho Trio was formed by three brothers, Altti U. Laiho (born 1939), Veikko O. Laiho (b. 1942) and Pentti K. Laiho (b. 1944). According to many experts, the trio was extremely unique in its composition, repertoire, and virtuosity. The repertoire of the trio consisted of big symphony orchestral compositions arranged for three accordions. The brothers grew up in the city of Pori, in southwestern Finland, but they made their main career in the United States where they lived for years.