Vox Christi

Vox Christi, Latin for Voice of Christ, is a setting of Jesus' words in a vocal work such as a Passion, an Oratorium or a Cantata. Conventionally, for instance in Protestant music of the Baroque era, the vox Christi is set for a bass voice.

In Protestant Germany the words of the vox Christi are in German: when the vocal work contains a sung Gospel reading, such as in Bach's Passions, the words are taken from Luther's Bible translation, but the words may also be free verse, as for instance in the Brockes Passion. In either case the composition may also contain a setting of an Evangelist's words, which are traditionally set for a tenor voice.

Apart from a difference in voice type, settings of Jesus' words in recitatives can be further differentiated from surrounding text settings by, for instance, giving them a more arioso character, or setting them accompagnato (while the Evangelist and other characters sing secco).

Jesus Christus ist um unsrer Missetat willen verwundet is a St Mark Passion which originated in Hamburg in the first decade of the 18th century. Johann Sebastian Bach's first staging of this Passion music was in Weimar c.1712. Its vox Christi bass appears in secco and accompagnato recitatives, and in an arioso on the Gospel words "Eli, eli, lama asabthani". In his Brockes Passion George Frideric Handel set Jesus' words for bass in recitatives, ariosos and arias. The Evangelist's recitatives are set for tenor.

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