Born in Buttenhausen, Wuerttemberg on January 25, 1890, Karl Adler studied music at the Stuttgart Conservatory, where he became Director in 1921. He was a cofounder of the Verein zur Förderung der Volksbildung, an adult-education organization, and director of its music department. In 1926, he was among the leading forces that built the Jüdisches Lehrhaus Stuttgart. After his dismissal from his position at the conservatory in 1933, he initiated and directed the Stuttgarter Jüdische Kunstgemeinschaft, a branch of the Kulturbund. In 1935, he became the head of the music department of the Mittelstelle für jüdische Erwachsenenbildung, a division of the Reichsvertretung der Juden in Deutschland dealing with adult education.