As he had to delay his departure to Rome because of the death of his mother, he was able to accept the first commission that brought him to public attention: a "Marche Funèbre et De Profundis en Hébreu" for three part choir, tenor and orchestra, which was commissioned by the "Consistoire Israélite du Département de la Seine", for a public service in memory of the assassinated duc de Berry, performed on 24 March 1820.