Losy senior had a number of business interests and was appointed a Councillor of the Exchequer and Deputy of the Salt, Beer and Wine Council by the Bohemian Court Chamber.
As a result of helping to defend Prague against the assault of Swedish troops in 1648, Losy senior was ennobled, becoming a baronet in 1648 and Count von Losinthal in 1655.
Losy's interest in music was fostered by his lute teacher and valet Achazius Kazimir Huelse who seems to have remained a lifelong friend.
This was the Courante Extra-ordinaire, which was part of the collection Cabinet der Lauten, published in 1695 by Philippe Franz Lasage de Richée.
After his death in 1721, his son Adam Philipp Losy von Losinthal, an Austrian statesman, General Building Director, Knight in the Order of the Golden Fleece and also a gifted musician, inherited all his estates.
Losy composed mostly dance suites, as was typical of his time, but sometimes attempted larger works such as those in the three-part overture style popularized by Jean-Baptiste Lully.
One of his manuscripts, a collection of pieces written for the 5-string Baroque guitar, is housed in the National Library of the Czech Republic in Prague.