For their second dip into Baroque waters, Keith Jarrett (once again on harpsichord) and master recorder player Michala Petri go into the deep end with an all-Bach program. Covering six sonatas in mostly major keys, they exude just as much verve as on their previous traversal of Handel’s chamber works. The C-major sonata, which shuffles two slow and two fast movements, is the chewy center, the final Allegro boasting Jarrett’s lute register in tasteful decadence, while the final sonata in E major revels in its denouement with a scintillating flourish.