-Ritornello form: built on two motives: a repeated dotted note figure, with antiphony between the oboes and strings, with syncopation
-Cantus firmus: sopranos enter with verse 1 of the chorale singing in dotted minims, while the other parts weave their music around this
-Lower voice parts with a polyphonic texture: tenors and basses sing music that fits with, but isn't related to the cantus firmus or the orchestral music
-Imitation: in bar 29 sopranos enter first, with the other voices later