Vivaldi's oeuvre includes two collections of twelve 
          concertos each, which bear the title of 
La Cetra (the lyre), 
          and were dedicated to the Habsburg Emperor Charles VI. The first was 
          printed in 1727 in Amsterdam as his op.9, the second has been preserved 
          in manuscript. The liner-notes say that the concertos in both collections 
          are all different, with the exception of the twelfth, "which is common 
          to both". That concerto is included here and is for two violins, and 
          has the catalogue number RV 520. However, the twelfth concerto from 
          op. 9 has the number RV 391 and is scored for one violin. As the catalogue 
          in the article on Vivaldi in 
New Grove doesn't include references 
          to the manuscript collection 
La Cetra I can't solve this mystery. 
          
            
          The first disc to be reviewed here is the second devoted to this unpublished 
          collection. Some of these concertos are incomplete, and these have been 
          replaced here by alternative concertos from Vivaldi's large output. 
          The 
Concerto in B flat (RV 380) replaces the 
Concerto 
          RV 360 in the same key. The 
Concerto in g minor (RV 327) replaces 
          the 8th concerto from the manuscript (RV 320) and the 
Concerto in 
          C (RV 171) is included as a substitute for the 
Concerto in D 
          (RV 203). 
            
          The 
Concerto RV 327 is the most virtuosic of them all, a typical 
          Vivaldian showpiece. The other concertos are more moderate in their 
          technical requirements. Some slow movements display strong expression, 
          for instance the largo from RV 171. These aspects are mostly worked 
          out pretty well, but in the fast movements the playing has some rough 
          edges, and the tutti sections are sometimes a little abrasive, even 
          aggressive. The intonation is not always perfect. 
            
          This disc also includes two concertos for two violins. These are the 
          two concertos from this manuscript collection so scored. According to 
          the liner-notes by Fabrizio Ammetto to his recording of concertos for 
          two violins by Vivaldi (
review) 
          the parts for the first solo violin of both concertos are missing, a 
          fact not mentioned in the liner-notes of the Dynamic disc. Therefore 
          some reconstruction is needed, but who has done that job and how remains 
          a mystery. In both concertos the middle movement is scored for the two 
          violins with basso continuo alone. 
            
          Ammetto's performances are to be preferred in these concertos. They 
          are technically superior and the sound is more pleasant to the ear. 
          That also goes for the 
Concerto in D (RV 513) which is included 
          on the second disc of L'Arte dell'Arco. It is entirely devoted to concertos 
          for two violins, of which Vivaldi composed 28. Some of these works may 
          have been written as part of Vivaldi's activities as teacher in the 
          Ospedale della Pietà in Venice. An example could be the 
Concerto 
          in C (RV 506) in which the second violin mostly repeats the statements 
          of the first. In various concertos the two solo parts are so demanding 
          that they can only be played by virtuosos such as Vivaldi himself. Fabrizio 
          Ammetto, in the liner-notes to the Tactus recording, comes up with the 
          suggestion that Vivaldi could have played them with his father, Giovanni 
          Battista, a skilled professional violinist and probably his only formal 
          teacher. 
            
          These double concertos are not that well represented in the Vivaldi 
          discography, and it is a matter of good fortune that this disc includes 
          five concertos which are not part of the Tactus production. L'Arte dell'Arco 
          begin with the 
Concerto in a minor (RV 523) in which the violins 
          mainly play at the high end of their compass. It reveals the main weakness 
          of these performances: the intonation, in particular at high notes, 
          is often a little suspect. The violinists produce a bright tone which 
          sometimes tends towards shrill. The 
Concerto in G (RV 516) is 
          called bright and lively, but the andante has some dark streaks. The 
          tempo seems to be a little too slow, considering the indication of 'molto 
          andante'. The 
Concerto in c minor (RV 509) is considered a work 
          from Vivaldi's later years. There are indeed some traces of a 'post-baroque' 
          fashion, including strong dynamic contrasts. Again I find the andante 
          molto a shade too slow. The 
Concerto in D (RV 513) is one of 
          the most virtuosic pieces and the only which was printed - apart from 
          the concertos which were included in Vivaldi's op. 3 collection. The 
          edition dates from 1736 but the concerto was probably written about 
          ten years earlier. The written-out cadenza for both violins in the last 
          movement is especially remarkable and includes various modulations. 
          The disc ends with another showpiece, the 
Concerto in d minor 
          (RV 514). It is an extroverted work, and the adagio is quite expressive. 
          That character comes off well here. 
            
          L'Arte dell'Arco perform these concertos with one instrument per part. 
          That results in a fragile sound in which every little lapse is noticeable. 
          Fabrizio Ammetto and his Orfeo Ensemble have four violins in the tutti 
          which results in a more robust sound and a stronger contrast between 
          soli and tutti. As the size of the ensembles seems to have been variable 
          at the time there is some justification for both options. 
            
          On balance, L'Arte dell'Arco deliver performances which can be enjoyed 
          if you are willing to be tolerant in regard to some technical imperfections 
          and a sound which is not always that pleasant to the ear. Considering 
          the fact that this repertoire is a little neglected these two Dynamic 
          discs are to be considered, especially by those who have a special interest 
          in Vivaldi. 
            
          
Johan van Veen 
          http://www.musica-dei-donum.org 
          https://twitter.com/johanvanveen