Born in the northeastern French city of Metz and descended from Italian lineage, Longo, an only child, began playing the piano at the age of eight.

[1] His parents' love of music added to Longo's inspiration, as he listened to such artists as the Beatles, Pink Floyd, and numerous jazz records, and the family travelled to Verona each year to attend ballets, operas, and concerts.

[1] After several collaborations with other artists, such as Orwell and Variety Lab, and a stint in the group Fugu,[1] Longo began making music of his own in 2004, under the name Cascadeur, which was suggested by a friend.

This was a collection of re-recorded tracks from his previous albums, one of which was also titled The Human Octopus, with more elaborate instrumentation and input from the American band Midlake on two songs, as well as the Cognac-based Young Rapture Choir.

In 2014 and 2016, Longo composed original music for the feature films Le Combat ordinaire (under his own name) and Amis publics (under his stage name), respectively.

The song "Meaning (Choral Version)" accompanies an advertisement for Nestlé chocolate[9] and appears in the French films Heaven Will Wait (2016) and C'est la vie!