Listing with Opera Italiana including biography, noted performers of his works, and pictures.

Biography, portrait, and brief analysis of his "Grande messa da requiem in sol minore" from the Alphabetical Survey of Requiem Composers.

Biography noting studies and career with special attention on his influence in the cities of Ingolstadt, Germany and Venice, Italy with portrait and Guild Music discography.

English lyrics of the tribute he wrote upon hearing of Beethoven's death.

Biography noting his move to Italy and briefly covering his secular and religious musical careers. From the Grove Concise Dictionary of Music entry at WQXR radio.

Wikipedia article with biography and internal links to related people and topics.