His research focuses on the Classical period, particularly Mozart and performance practice. He has written extensively on the issues of authenticity surrounding the works of Leopold Mozart and his son, Wolfgang. Other publications of his deal with Mozart's chamber music, life in Salzburg, biography and his life in contemporary documentation as well as Cole Porter.
His research focuses on the Classical period, particularly Mozart and performance practices. He has written extensively about authenticity concerns surrounding the works of Leopold Mozart and Wolfgang Mozart. His publications also cover Mozart's chamber music, life in Salzburg, biography, and his life as documented by contemporary sources, along with Cole Porter.