Listeners wouldn't think that after 40 years of the Baroque keyboard revival that there existed high-quality music that even Baroque specialists haven't heard of. But that's just what German harpsichordist Mitzi Meyerson, a specialist in neglected Baroque repertoire, has unearthed here. English composer Richard Jones has apparently suffered from an almost total lack of information about his life; just a few of his works other than these sets of harpsichord "lessons" have survived, and there is no biographical information to hang them on.