Bach composed in Leipzig the biggest part of his cantatas. A cantata is a composition in several parts for one or more voices and instruments, where arias, recitatives and chorusses alternate. Often these were preceded by an instrumental introduction, a sinfonia. In Bach's earliest cantatas these were also called concerto, sonata or sonatina. These instrumental works are collected on this album.
The 18th set of Bach's cantatas contains exclusively works of the third yearly cycle from Leipzig. Unlike the first two Leipzig yearly cycles, this one extends over a longer period: from June 1725 until 1727. The works in this set belong essentially to the years 1725-26 and are in some cases chronologically contiguous (BWV 187 and 45; BWV 98, 55, 52), with the result that the original sequence can be easily grasped.