The cantata is divided into seven movements, with the first stanza, a chorale fantasia, the second stanza is a chorale prelude, and the third stanza written as a four-part chorale.
Three of Cantata 140's seven movements feature the famous chorale "Wachet auf." Bach frequently ends his chorale cantatas with a simple and direct, homophonic setting of the chorale. One of Bach's most famous pieces is the middle movement, which is also a chorale. The chorale tune is only sung by one part this time, the tenors. The first movement is another that makes use of the chorale. It's the most difficult.
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