 Most are in the traditional style and form of the 17th-century vocal concerto, incorporating many of the characteristics of similar works by Heinrich Schütz - though with no traces of the latter's uniquely personal style.Large choral forms are enhanced by an orchestra of substantial size (most commonly two violins, three violas, bassoon with continuo, clarinos, trombone and timpani), which supports the choral parts as well as interjecting all manner of colourful concerted effects.The choral writing may be massively chordal or intricately polyphonic, and there are a number of much simpler concerted passages for soloists supported only by the continuo.