Listen to Mass in C major, K.258 "Spaur-Messe": Credo online. Mass in C major, K.258 "Spaur-Messe": Credo is an Unknown language song and is sung by Peter Neumann/Collegium Cartusianum Köln/Kölner Kammerchor/Patrizia Kwella/Barbara Schlick/Ulla Groenewold/Christoph Préga.... Mass in C major, K.258 "Spaur-Messe": Credo, from the album Mozart: Sämtliche Messen / Complete Masses, was released in the year 2011. The duration of the song is 4:41. Download Unknown songs online from JioSaavn.