"Un monde à changer" is a French language single by French singer and actor Nyco Lilliu, his debut charting single.

The song written and composed by Lionel Florence, Patrice Guirao and Matthieu Mendès is taken from the forthcoming French musical Robin des Bois, an adaptation of Robin Hood, that premiered on Palais des congrès de Paris on 26 September 2013 starring M. Pokora.

[1] The song is accompanied by a music video, which is a modern take bringing old and new elements from his role as Friar Tuck singing and dancing in the hoods or in contemporary Paris streets.

It has peaked at number 114, spending (until start of December 2012) seven weeks in the charts.

It also reached #27 on the main Ultratop 50 chart based on actual record sales.