Born in Lebanon, Mohamed Haidar obtained a first Bachelor's degree in Computer Science at the American University of Beirut, before studying singing at the National Conservatory of his country in the class of Kévork Karamétélian. He pursued his music studies in Switzerland at Geneva's and Lausanne's Haute école de musique in the classes of Marcin Habela and Stephan MacLeod. During his studies, he received the Colette Mosetti Foundation Scholarship. At the Opéra de Lausanne, he made his debut as Ramirez in La belle de Cadix by Francis Lopez (2016). At the Grand Théâtre de Genève, he sang the role of Mendiant in the world premiere of Camille Saint-Saëns' Ascanio (2017). Among the roles he played on stage: Il conte Almaviva in W.A. Mozart's Le nozze di Figaro, Belcore in G. Donizetti's L’elisir d’amore, Podestat in Georges Bizet's Le docteur miracle as well as several roles in contemporary opera creations. In concert, he regularly performs sacred music repertoire including works by Johann Sebastian Bach, Joseph Haydn and Felix Mendelssohn.