The first eight bars of the Crucifixus of Zelenka's 1730 Mass (ZWV 13) is almost identical to Handel's Largo dating from 1738. It is in the middle of track 3 of Supraphon's CD 11 0816-2 and on page 66 of the Carus-Verlag edition of the music. Zelenka's Crucifixus is marked Larghetto and is in 3/2 time. What can be the explanation for this? Is it just coincidence?