Stanley Ritchie has directed and appeared as soloist with many period instrument ensembles, including the Academy of Ancient Music, Philharmonia Baroque Orchestra, Tafelmusik, and the Handel and Haydn Society Orchestra. He is in demand for master classes and workshops throughout the world. Professor Ritchie is a member of Duo Geminiani with harpsichordist Elisabeth Wright, and was a member of Three Parts Upon a Ground, specializing in 17th-century music for three violins. For 20 years, he was a member of The Mozartean Players, with whom he recorded the complete Mozart and Schubert Piano Trios. He has held various positions as a modern violinist, including concertmaster of the New York City Opera Orchestra, associate concertmaster of the Metropolitan Opera Orchestra, and first violinist of the Philadelphia String Quartet.ngs will be published in 2008. Next to his concert activities, Bart Spanhove also gives a large number of master classes.