Fabien Marsaud (born 31 July 1977), known professionally as Grand Corps Malade (GCM), is a French slam poet and lyricist. He has released seven studio albums so far, and all of them reached top-five on the SNEP chart. GCM has started writing and performing a capella at slam events in 2003. Three years later, in 2006, he signed with Universal's affiliate AZ and released his debut album Midi 20, which became top-ten selling record of the year in France.
Its follow-up Enfant de la ville (2008) and the third album 3ème temps (2010) were less successful commercially. In 2013, he released family-motivated Funambule, while Il nous restera ça (2015) featured 11 collaborations with other musicians. His sixth album, Plan B (2018), reached number two on the SNEP album chart. In 2020, he released Mesdames (Ladies), featuring ten duets with women, which topped the French chart. Its lead single, "Mais je t'aime" (But I love you) – a duet with Camille Lellouche, has become his highest-charting song on the French singles chart.
GCM's accolades include three Victories of Music awarded by French Ministry of Culture. His stage name means "tall sick body" in French, a reference to his height (nearly 6'4" or 1.94m) and to a spine injury that forces him to walk with a crutch, due to a 1997 accident that originally had doctors tell him he would never walk again.