In 1837, together with Marie Escudier, his brother, and Jules Maurel he founded the weekly La France musicale as well as a music publishing company.
The Escudier brothers helped to establish Verdi's reputation across Europe as the leading composer of Italian opera.
[2] From 1876 to 1878, Léon Escudier directed the Ventadour Room at the Théâtre italien de Paris where he staged Verdi's operas.
[3] He wrote, in collaboration with his brother, Études biographiques sur les chanteurs contemporains (1840), Dictionnaire de musique (1844), Vie et aventures des cantatrices célèbres (1856), and his autobiography, Mes souvenirs (1870).
[4] After he died in Paris, his catalogue came up for auction and was bought by a range of French music publishers including E. & A. Girod, Louis Gregh, Léon Grus, Georges Hartmann, Henri Heugel, Auguste Le Bailly, Alphonse Leduc, Henry Lemoine, and Auguste O'Kelly.