The holdings of the Music Division of the New York Public Library cover virtually all musical subjects; its scores represent a broad spectrum of musical style and history.

Mozart's Adagio and Rondo (K. 617) was written for the armonica, or musical glasses (a set of tuned glass bowls) and a quartet consisting of flute, oboe, viola, and cello. The music is effective played as an organ solo. The Adagio may be registered "forte," in the style of Mozart's Fantasia (K. 608). The Rondo should be played on the flute stops. Arranged for organ by E. Power Briggs.

John Hunt was born in Windsor and Graduated from University College London, in German language and literature. He has worked in personnel administration, record retailing and bibliographic research for a government agency and is on the lecture panel of the National Federation of Music Societies. In his capacity as Chairman of the Furtwängler Society UK, John Hunt has attended conventions in Rome, Paris and Zürich and has contributed to important reference works about Furtwängler by John Ardoin and Joachim Matzner. He has also translated from the German Jürgen Kesting's important monograph on Maria Callas. John Hunt has published discographies of over 80 performing artists, several of which have run into two or more editions.