The status and quality of Costeley's music warrant his place amongst the principal masters of the Late Renaissance. In spite of being an organist and church musician, it is primarily thanks to his secular oeuvre that he is recognized today, in particular to one piece: the emblematic Mignonne allons voir si la rose, written on a text by Ronsard. Our project will draw on this varied repertoire in order to provide a portrait in sound of this great master of vocal music.