In the Baroque period, there really was no such thing as an "orchestra" as we understand the term today. There were large collections of singers and players brought together for special occasions, but aside from those, an "orchestral" work was anything that required more than five or six players. Bach"s harpsichord concertos, for example, can be performed by a couple of dozen string players plus the soloist, or with an accompaniment of one person per part, which is more or less what we get here. These small forces permit an unprecedented transparency of sound and sharpness of attack, even if some weight and body of tone necessarily get sacrificed. It"s a perfectly legitimate way to play the music, however, and you won"t find it better done than here. --David Hurwitz