Part Three - Herr, dein Mitleid, dein Erbarmen (Duet)

Whose song is Part Three - Herr, dein Mitleid, dein Erbarmen (Duet)?

Artist Album
Gardiner, John Eliot; Monteverdi Choir, The English Baroque ...
J.S. Bach - Christmas Oratorio BWV 248 Part One - Part Three ...
Gardiner, John Eliot; Monteverdi Choir, The English Baroque Solo
J.S. Bach - Christmas Oratorio BWV 248 Part One - Part Three (D