Little is known about Hungarian music prior to the 11th century, when the first Kings of Hungary were Christianized and Gregorian chant was introduced. During this period a bishop from Venice wrote the first surviving remark about Hungarian folk song when he commented on the peculiar singing style of a maid. Church schools in Hungary taught Western Christian chanting, especially in places like Esztergom, Nyitra, Nagyvárad, Pannonhalma, Veszprém, Vác and Csanád; and later schools began focusing on singing, spreading Latin hymns across the country.