 In the same year, he organized concerts for his own works and that of German composer Willi von Moellendorff in Jerusalem and Tel-Aviv; he lectured on the quarter tone system in Palestinian music in Tel-Aviv and offered courses in ear training to performers and composers.In 1928 Sandberg presented a concert in Jerusalem of his own works and those of Arnold Schoenberg.In 1929 he arranged concerts of his works in Germany and published a paper on his theory of microtonal music entitled, “Die Musik der Menschheit