The 10 'Hello Ghost' songs are all about freedom. Will Z. decided to record the album away from his familiar environment: "I wanted to get out of my habits and go on an adventure because that's what 'Hello Ghost' was about." In February 2018, Pierre Vancraenenbroeck and Will went to Berlin, to Lightning Recorders, a studio where time stopped in the 60s. "We recorded all the basic tracks on museum pieces, from drums to amp, console to tape recorder. This sound and our discovery of the town build our music and created a very special atmosphere, out of time." said Will Z. Back in Liège, Will Z. invited other musicians to Studio 5 to appear on his album: Éric Trillet, keyboardist who played on the original songs in the 90s, Fake Empire (a band composed of three sisters and a friend) and a string section led by violinist Anne-Claude Dejasse. The band teamed with filmmaker Caroline Poisson for videos of 'Hello Ghost'.