There is no shortage of good Bach violin concerto recordings, nor even of those played by historical-performance groups, yet this one has several distinct attractions. First, is simply the presence of violinist Kati Debretzeni, long a violin section leader of Gardiner's English Baroque Soloists but rarely heard as a soloist in her own right. She's one of the few historical-performance specialists to have emerged from Eastern Europe, and she deserves wider exposure.