Bach* − Ruth Ziesak, Monica Groop, Christoph Prégardien, Klaus Mertens, Vokalensemble Frankfurt, Concerto Köln, Ralf Otto – Oratorio De Noël

The Vowel- ensemble Frankfurt must certainly be invited to the Top ensembles in the choral field can be counted. Besides perfect intonation, homogeneous choir sound and very good text processing constancy touches particularly pleasantly a beautiful, round, soft and completely natural- …light-sounding phrasing.

This is vintage, classic Koopman: Tempi that never linger, orchestral textures that accord privilege to clarity and insight over effect and superb, beautifully articulated, solo vocal lines. Koopman's lucidity might appear a little too detached or cool for some listeners who are used to responding to the emotional charge of Bach's Passions. One of Koopman's greatest strengths is his grasp of architecture: of the unfolding of the passion events; of the relative roles and interactions of the soloists and 'crowds'; of the inevitability of events in a musical - as opposed to a Biblical - sense.

In the autumn of 1713, Bach was invited to apply for the post of organist and music director at the Marktkirche in Halle in succession to Handel's teacher, Friedrich Wilhelm Zachow. Bach was honoured to accept the invitation and in doing so made it clear that he was keen to extend his activities. Under Zachow, who had created a respectable repertory of sacred works of the most varied genres, including a large number of church cantatas, music in Halle had flourished and reached a level that offered Bach an area of responsibility that he evidently found attractive.

This twenty-second and last volume of cantata recordings contains two of Bach's latest cantatas (BWV 30 and 80), including the secular model for BWV 30 and Wilhelm Friedemann Bach's arrangement of two movements from BWV 80 dating from after 1750. Also included are the four Kyrie-Gloria masses of the late 1730s; they are very closely associated with the cantata repertoire of the 1720s. These masses are based on selected movements of cantatas dating from the period 1723-6; after an interval of ten or so years Bach reworked them, in most cases very thoroughly. Renowned Bach specialist Ton Koopman (1944) was awarded the 2006 Bach Medal by the city of Leipzig 05 Jun 2006, the final day of this year's annual Leipzig Bach Festival.

Volume 17 in the Bach cantata series contains exclusively works from the third yearly cycle of cantatas from Leipzig, which, unlike the previous two Leipzig cycles, extends over a longer period of time, from June 1725 until 1727. The cantatas in this volume can be divided into three chronologically distinct groups: December-January 1725-26 (BWV 57, 32), September-October 1726 (BWV 35, 17, 19, 169 and 56) and January-February 1727 (BWV 58 and 84).

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.

The cantatas of volume 20 combine the concluding items from the "Picander" year of 1728-29 with a series of cantatas from the first half of the 1730s. A special feature is the inclusion of a hitherto completely unknown sacred work from Bach’s Weimar period, discovered as recently as May 2005 by Michael Maul (who works in the Bach-Archiv in Leipzig) in the Herzogin Anna Amalia Library, Weimar. This aria of praise dating from 1713, preserved in a newly discovered original source and now assigned the BWV number 1127, supplements Bach’s Weimar cantatas in a felicitous manner. Above all it is the first new work to add to Bach’s vocal output for 70 years, since the discovery of the cantata fragment “Bekennen will ich seinen Namen”, BWV 200.

Most of the Cantatas in this this last but one issue of the complete Cantata work has been composed between 1730 and 1740. This volume contains - among others - the famous cantata "Wachet auf ruft uns die Stimme" BWV 140, with the famous chorale "Zion hört die Wächter singen".

Previously begun on Erato, Koopman's cantata cycle was taken over and completed in 2007 on Challenge Classics. It now looks set to surpass the famous Leonhardt-Harnoncourt set on Teldec (and indeed most of his other competitors). Koopman favours an intimate approach to the choruses - namely one voice to a part. Also, he opts for females soloists rather than boys, as would have been the case in Bach's day, and he favours mixed rather than solely male choirs. For many this will be a plus point, and it is good news for fans of Barbara Schlick. He goes for slightly higher than normal pitch - a semi-tone above present day pitch, which, as Christopher Wolff's notes point out, is what Bach used in Mühlhausen and Weimar, brightening the sonority quite a lot. The singing in virtually all the cantatas is pretty impressive and the instrumental playing is of a very high order.