Giroust set the Super Flumina Babylonis twice. One of the settings, according to Grove Music, was submitted to "a contest sponsored by the Concert Spirituel in 1768 . . . There were three finalists, and when Giroust was revealed as the composer not only of the first prize, but also of a specially demanded second prize, there was a great sensation. The second setting was compared with the work of Pergolesi and it seems d’Alembert and others supported it believing it to be by Philidor."
It is not known whether this is the first or second of these settings.