On 21 October 2015, Les Halles was a guest on Perfect Sound Forever. Les Halles has been played on NTS over 60 times, featured on 59 episodes and was first played on 23 September 2015.

Les Halles is the solo venture of Baptiste Martin, based in Brussels. Renowned for his evocative musical explorations, Baptiste Martin, the French ambient artist behind Les Halles, has been weaving delicate tapestries of sound since 2012. Infusing (pan) flute melodies, ethereal field recordings, and celestial keys, Les Halles' compositions transport listeners into a realm of contemplation and nostalgia - through hazed matrixes of fog, dust, and echo, scented with nameless dreams and past-life memories.