In February 1525, Blarer started preaching in Konstanz and he soon became a leading figure of the local Reformation. With his cousin and co-reformer
Johannes Zwick and their brothers,
Konrad Zwick and Thomas Blarer respectively, who were members of the
city council (Thomas later became mayor), Blarer had a spiritually as well as influentially effective team to continue the reformation. The Konstanz Reformers were very idealistic, hoping to cleanse the city of all
sin and evil. In 1526, a
moral law was passed which prohibited dancing, drinking, swearing, adultery, etc. Enforcing the law proved difficult at first, until a new strategy was introduced in 1531; from then on all citizens had to take turns in functioning as moral guardians, reporting every violation of the law to the council. This eliminated the danger of the people‘s anger at the rules to be directed at any one person, as well as the danger of systematically overlooking friends and family. Another speciality of the Constance Reformation was their love for music. Ambrosius wrote many educational and religious songs which were sung as part of the
liturgy. Several of his songs can still be found in the Swiss Evangelical Hymn-Book. ==Correspondence and influence==