Born near Paris (France), Patrick Loiseleur begins music at the age of 5 with viola then piano. He starts writing music as an autodidact in his teens. He also studies mathematics at Paris's Ecole Normale Supérieure and receives a PhD in Computer Science from Paris XI-Orsay University. He is married and father of two when he starts studying music seriously again, at ENM-Alfred Cortot with Michel Merlet, where he gets a degree in Composition and another in Orchestration, then at Conservatoire Royal de Liège (Belgium) where he gets a Licence of Viola with Pierre-Henri Xuereb in 2011 and a Master of Composition in 2013 with Michel Fourgon. He is currently sharing is time between a part-time job as research engineer and writing music.
In 2013 he wins an award for La Victoire de Guernica (a piece for soprano colorature and chamber orchestra) at the Rencontres Internationales de Composition de Cergy-Pontoise. His music is played in Europa (Germany, Belgium, Italy), United States, Canada, Korea, Japan. Sometimes it is even played in France... He has the big luck to work with great artists like Vincent Royer (viola), L'Oiseleur des Longchamps (baritone), Sevan Manoukian (soprano), Pascal Devouon and Rikako Murata (pianos), Jean-Pierre Peuvion (clarinet), Fanny Vicens (accordéon), Axia Marinescu (piano), Philippe Hattat-Colin (piano), Alain Pire (trombone).
He is also the main contributor to the Journal de Papageno, a prominent blog (in French language) on classical and contemporary music.