The life data of Agostino Belloli can not be determined exactly. In the 1st half of the 19th century he worked in Milan as 1st hornist in the Theatre della Scala and as a teacher at the Conservatoire. There were the brother of Luigi Belloli (1770 -- 1817) who also worked at the Scala of Milan and was teacher at the Conservatoire.
12 progr. Etudes for Horn
These etudes were also publised by Ricordi in Milan. They are excellent studies also for the natural horn.