After Savonarola's execution, Ercole, then in his eighties, probably commissioned his newly hired composer, Josquin, to write him a musical testament, very likely for performance during Holy Week of 1504.
[4] Savonarola's impassioned meditation on sin and repentance, Infelix ego, composed in prison after his torture, and published in Ferrara in mid-1498 shortly after his death, was the probable model for Josquin's setting.
It is an extended prayer to the God against whom he believes he has sinned, based closely on Psalm 51, and unified by a boldface-type repetition of the phrase "Miserere mei, Deus" throughout the text.
Josquin arranges for the words to be heard by using chordal textures, duets, and by avoiding dense polyphony; and of course after each verse the tenor voice intones alone "Miserere mei, Deus", as in the Savonarola meditation.
Later in the 16th century, composers who specifically set the words of Savonarola, such as Adrian Willaert, Cipriano de Rore, and Nicola Vicentino, all of whom wrote motets on Infelix ego, used Josquin's work as a model.