Schul was born in Chemnitz, Germany, into an Eastern European Jewish family, and grew up in Kassel. Only little is known about his life. He moved to Prague in 1933. In 1937 he started to study composition in Prague, where he was a pupil of Alois Haba. During his time in Prague he became a friend of Victor Ullmann. In Prague he started also to archive a collection of synagogal-songs from the synagogue of Prague (under direction of Salomon Lieben). Schul married 1941 Olga Stern, and both were deported to Terezin the 30th Nov 1941. Schul died in Theresienstadt concentration camp from tubercolosis.