Jean Rondeau’s 10-CD compilation of all the known works of Louis Couperin is a cornucopia of delights. His harpsichord playing is off-the-charts terrific, as are the performances of his instrumental collaborators and vocalists. This highly persuasive box set is a must-have for aficionados of French keyboard repertoire.

The all-female Ospedali musicians have been hidden twice: once when performing in their own time and once behind Vivaldi in our time. Philadelphia’s Tempesta di Mare uncovers music by some of these long-neglected women musicians.

Despite Bach’s overwhelming presence in our musical lives, a lot of influential scholarship remains inaccessible to a broader public because it is in German. A recent book (and searchable website) has bridged this gap with translations of over 50 lectures by prominent Bach expert Hans-Joachim Schulze. Loaded with the latest in-depth scholarship, the talks are nevertheless aimed toward the amateur listener.

Celebrating 35 years, Ensemble Galilei has seen, and perhaps anticipated, the coming together of the traditional music scene with early music. Their latest album mixes the great Irish composer Turlough O’Carolan with John Dowland and music from Elizabethan England with cracking Irish tunes, plus a few newly composed works.