Growing up in Compiègne, he took his first piano lessons at the local music school at the age of 10 with Christine Muenier.
[4] In 2010, he was asked to play at the Fête de la Musique festival in Compiègne, and this marked his return to the keyboard.
[2][5] In 2015 Debargue was awarded fourth prize at the XV International Tchaikovsky Competition and the Special Prize of the Moscow Music Critics Association for the musician "whose incredible gift, artistic vision and creative freedom have impressed the critics as well as the audience".
He has collaborated with conductors including Valery Gergiev, Andrey Boreyko, Mikhail Pletnev, Vladimir Spivakov, Yutaka Sado, Tugan Sokhiev and musicians such as Gidon Kremer, Janine Jansen and Martin Fröst.
[8] In 2017 a documentary directed by Martin Mirabel (Bel Air productions), Lucas Debargue : To Music, was released and selected for the FIPA in Biarritz in 2018.