The choir and orchestra of St. Michael's have by far the longest and richest tradition of all the musical ensembles connected to our church. They can look back at a history that spans more than 400 years, starting with the consecration of the altars in 1592, which was accompanied by then maestro di capella Orlando di Lasso. Today the choir and orchestra are essential elements in the great concert of all musical ensembles at St. Michael's.

2011 - The organ is reorganised and expanded with a German swell-box by the Rieger organ-building company from Vorarlberg/Austria (inauguration on October 30, 2011). The prospectus of Jesuit brother Johann Hörmann from the 17th century is retained and the better part of the pipe material from the predecessor organ (Sandtner 1982/83) is re-used. The new Rieger organ allows stylistically accurate interpretations of very wide range of organ music and provides an ideal foundation for sophisticated improvisations.

Collegium Monacense of St. Michael's is a professional vocal ensemble that cultivates the tradition of the court chapel, i.e. music performed around the times of St. Michael's original construction. The ensemble's sound is ideal for performing works of the early modern era, particularly Renaissance and early Baroque music. But the Collegium also tackles music in all other styles and from all eras (in appropriately varying sizes).