Fortuna desparata was a quite well-known 15th century Italian song and tune that composers used for nearly a century, until the 1540s, for reworking into polyphonic pieces, both secular and religious.

Hawthorne Early Music editions: fortuna scores

Composer	Title	Subtitle	# Parts	Language	Mode	Files
[? Antoine Busnois (c.1430-1492)]	Fortuna Desperata		4	instrumental	Mixolydian	Score + Parts
Felice (fl. late 15c)	Fortuna desperata		5	instrumental	Ionian	Score + Parts
Heinrich Isaac (c.1450-1517)	Fortuna disparata / Sancte Petre / Ora pro nobis		5	instrumental	Ionian	Score + Parts
Johannes Martini (c.1430-1497)	Fortuna disperata		4	instrumental	Ionian	Score + Parts
Ludwig Senfl (c.1486-c.1543)	Es taget vor dem Walde/Fortuna desperata		5	german/italian	Ionian	Score + Parts
Ludwig Senfl (c.1486-c.1543)	Ich stund / Fortuna desperata		5	german	Ionian	Score + Parts
Ludwig Senfl (c.1486-c.1543)	Fortuna / Pangue lingua / Her durch dein Blüt		5	german	Phrygian	Score + Parts
Mattias Greiter (c.1494-c.1550)	Passibus Ambiguis - Fortuna Desperata	Pars prior	4	instrumental	Lydian	Score + Parts
Jacob Obrecht (1457/8-1505)	Missa Fortuna Desperata	Kyrie eleison	4	latin	Ionian	Score + Parts
Pinarol, Jean (fl. late 15c)	Fortuna Desperata		4	instrumental	Ionian	Score + Parts
Anonymous	Fortuna Desperata		4	instrumental	Lydian	Score + Parts