Bohuslav Martinů
During the 1930s Beck, with his composer friends Tibor Harsányi (Hungary), Bohuslav Martinů (Czechoslovakia), Marcel Mihalovici (Rumania), Alexandre Tansman (Poland) and Alexander Tcherepnin (Russia), formed L'École de Paris, whose concerts occasionally also featured Alexander Spitzmüller-Harmersbach (Austria).