For Miriam Groß, the “Missa in C minor” is one of the most impressive Mozart mass settings. The incomplete mass was not – as usual – written on the basis of a composition commission, but Mozart vowed to write a mass if he succeeded in marrying his well-known Constanze Weber. Against this background, it is not surprising that the soprano solo (the future Constanze Mozart was after all a soprano) has a very large, often operatic aria-like part in this mass. The mass was reconstruted several times; two of these versions are available from Carus.