Mordecai (Markus) Sandberg (Hebrew: מרדכי זנדברג) (February 4, 1897 – December 28, 1973) was a composer and physician. He was a creative and prolific composer, a musical theorist, and an innovative physician in the area of alternative and natural medicine in 1920s and 1930s Jerusalem.Sandberg was a pioneer in the field of microtonal theory and music. He believed that a microtonal system of music could be the basis of making “a music of humanity” that would bring people together from all cultures and transcend local traditions. He argued that although there seemed to be a conflict between the western and eastern tonal systems, there was in reality one music and one humanity. He developed his , a synthesis of oriental and occidental scales using microtones. He also designed several instrumen