Background
He was the son of the organist Isaak Hassler and the brother of the musicians Jakob Hassler and Hans Leo Hassler.
He was the son of the organist Isaak Hassler and the brother of the musicians Jakob Hassler and Hans Leo Hassler.
In 1586 he became organist at the Egidienkirche, succeeding Hans Haidens, but he was replaced himself in 1587 by Wilhelm Endels at Sankt Lorenz. From 1616 until his death he worked as an organist at Saint Sebaldus Church, one of the most prestigious posts in the city. Though a composer himself, he is mainly notable in the history of music for his publishing work, producing valuable collections of music by Italian and German composers and thus helped to introduce and spread Italian prima prattica to Germany.
He was also known to give advice on organs and probably also worked as an organ restorer.