In Janiewicz's biography, the years before his departure for England (1792) are quite obscure, especially the periods he spent in Italy. Newly found archival sources demonstrate that in 1786 he was in Naples, where he performed twice (January 17 and March 6) at a musical academy, the 'Conversazione degli Amici'; in particular, in the second concert he not only played the violin but also the clarinet, a skill he was not known to possess until now; the remuneration he received, compared with that of the other musicians involved, indicates that he was highly valued. At the beginning of 1790 Janiewicz was in Venice (another unexplored detail of his life), as is documented by two reports published in a local journal, the 'Gazzetta Urbana Veneta': on March 23 he performed two concerts composed by himself (probably nn. I and II in his catalogue) in a private room, and he played again on May 22 in the academy of 'Seguaci d'Orfeo'; the words used to describe his performances show that he was well known and held in great esteem by Venetian audiences.
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