What are the different types of movements used in Baroque choral works?

The Baroque period can be defined as a movement in Western art music between roughly 1600-1700. Pieces written in the Baroque period can be identified through their use of flowing melodic lines with ornamentation, terraced dynamics (often achieved primarily through textural changes) and contrapuntal textures. In sung music, there is often frequent use of ‘word painting’, a musical technique of writing music so that it reflects the literal meaning of the text – for example, in the recitative ‘Then Shall the Eyes of the Blind Be Opened (from Handel’s Messiah), the music illustrates the springing of the deer by jumping up to the highest note used in the piece on the words “leapt as a hart”.
With reference to Baroque choral music, there are three main types of work – an oratorio, a large religious work consisting of about 30 movements and using stories from the Bible as its subject matter (for example, Handel’s Messiah); a cantata, a shorter work written to be performed as part of a church service and specific to a particular Sunday or religious festival in the church calendar (for example, Bach’s Watchet Auf, ruft uns die Stimme was written for the 27th Sunday after Trinity); and an anthem, a single movement celebratory piece for chorus and orchestra that is not necessarily a religious work (Handel’s Zadok the Priest was originally written to celebrate the king, and has been used at every English coronation since).
Oratorios and cantatas are made up of three different types of movement – recitatives, arias and choruses. Recitatives are short ‘linking passages’ found in cantatas and oratorios, which serve as sung narration between movements. There are two categories of Baroque recitative – ‘secco’ (dry) recitatives, which use only one soloist and a continuo part, giving the soloist considerable space for ornamentation and rubato, and ‘accompagnato’ (accompanied) recitatives, which use soloist, continuo and strings, meaning that there is a more fixed sense of time (although the soloist will still frequently add their own ornamentation). Arias are movements which use only a soloist and orchestra but are much longer and more expressive than a recitative, as they have more of a musical function. Choruses use a full choir (Soprano, Alto, Tenor and Bass – or SATB) and orchestra. This gives way to a variety of possible textures – texts may be treated contrapuntally, homophonically or monophonically in order to create different effects.