Philippe Kahn (born March 16, 1952) is a technology innovator and entrepreneur, who is credited with creating the first camera phone sharing pictures instantly on public networks. Kahn has founded four technology companies: Fullpower Technologies, Starfish Software, LightSurf Technologies and Borland.

Kahn grew up in Paris, France, born to Jewish immigrants of modest means. His mother was an Auschwitz survivor, his father a mechanical engineer with a Socialist bent.

Kahn was educated in mathematics at ETH Zurich, Switzerland (Swiss Federal Polytechnic Institute), and University of Nice, France. He received a masters in mathematics. He also majored in musicology and classical flute at the Zurich Music Conservatory in Switzerland. As a student, Kahn developed software for the MICRAL, the earliest non-kit personal computer based on a microprocessor. The MICRAL is now credited by the Computer History Museum as the first ever microprocessor-based personal computer.

Kahn is married to Sonia Lee, who co-founded Fullpower Technologies, LightSurf and Starfish Software, and with whom he has a daughter. Kahn has three other children from a prior marriage.

Kurt Julian Weill (March 2, 1900 – April 3, 1950) was a German-Jewish composer, active from the 1920s, and in his later years in the United States. He was a leading composer for the stage who was best known for his fruitful collaborations with Bertolt Brecht. With Brecht, he developed productions such as his most well known work The Threepenny Opera, a Marxist critique of capitalism, which included the ballad "Mack the Knife". Weill was a socialist^{[unreliable source?]} who held the ideal of writing music that served a socially useful purpose. He also wrote a number of works for the concert hall, as well as several Judaism-themed pieces.

Kurt Julian Weill was born on March 2, 1900, the third of four children to Albert Weill (1867–1950) and Emma Weill née Ackermann (1872–1955). He grew up in a religious Jewish family in the "Sandvorstadt", the Jewish quarter in Dessau, Germany, where his father was a cantor. At the age of twelve, Kurt Weill started taking piano lessons and made his first attempts at writing music; his earliest preserved composition was written in 1913 and is titled Mi Addir. Jewish Wedding Song.

Louis Lewandowski (April 23, 1821 – February 4, 1894) was a German composer of synagogal music.

Lewandowski was born at Wreschen, province of Posen, Prussia (now Września in Poland). At the age of twelve he went to Berlin to study piano and voice, and became solo soprano in the synagogue. Afterward he studied for three years under A. B. Marx and attended the school of composition of the Berlin Academy. There his teachers were Karl Rungenhagen and Eduard Grell. After graduating with high honors, he was appointed in 1840 choirmaster of the Berlin synagogue. In that capacity he rendered invaluable services in the development of music for synagogue ritual. His principal works include: "Kol Rinnah u-Tefillah," for chorus; "Todah ve-Zimrah," for mixed chorus, solo, and organ; 40 psalms, for solo, chorus, and organ; symphonies, overtures, cantatas, and songs.

In 1866 he received the title of "royal musical director." Shortly afterward, he was appointed choirmaster in the Neue Synagoge, Berlin, for which he composed the entire musical service. His arrangements of ancient Hebrew melodies for choir, cantor, and organ are considered masterly productions, characterized by great simplicity and a profound religious sentiment. Many of Lewandowski's pupils became prominent cantors. Lewandowski was the principal founder of the Institute for Aged and Indigent Musicians, an institution that prospered under his management.