Following his piano studies, Alexandre Jamar studied composition with Allain Gaussin and then joined José Manuel López López's studio at the CRR in Paris, where he also attended Anthony Girard's orchestration class. Since 2020, he studies composition with Gérard Pesson at the Paris Conservatory and new technologies with Yan Maresz, Luis Naón, and Grégoire Lorieux.
In 2021, he orchestrated three songs by Ravel for the Orchestre de Paris. He also studied classical singing at the CRR with Lionel Peintre and Didier Henry and, since 2020, has been following Doris Lamprecht's "Concertist" cycle. In 2021, he performed as a soloist with the Orchestre Colonne and as Don Ottavio in Don Giovanni at the CRR of Paris. He holds a master's degree in cultural administration from Sciences Po Paris.