Music Composer and Concert Pianist. Born in Amsterdam on March 24, 1867. His mother was an opera singer and her maiden name was "De Jong." He studied under Julius Rontgen and was the piano accompanist for the Lamoueux Orchestra in Paris. He studied composition and orchestration under Franz Coenen. He came to the United States and became an accomplished composer, music teacher and concert pianist. He became famous for his large hands and his "reach" (spread over the octave) of the keys. Having a handsome looks did not hurt his popularity at the time. He was also tall and spoke with a cultured and charming European accent. He became a great friend of famed Ziegfeld performer and bodybuilder Eugen Sandow and wrote music for Sandow's performances and traveled with him. Sandow got him interested in physical culture and Sieveking developed a powerful and impressive physique. Sieveking is referred to in Sandow's biography by David L. Chapman and in the novel "Lost Horizon". He was invited to many fine parties and galas in New York City and Boston, which he apparently loved attending. He gave a celebrated concert with the Boston Symphony in 1895 where he played the Saint-Saens Piano Concerto in G Minor. Sieveking gave a solo piano recital at the famous Carnegie Hall in New York City on December 8, 1896, a crowning achievement for any performer then or today. He also performed in Atlanta at the Grand Opera House a few days later on December 17 with violinist Maud Powell to great reviews. He gave a solo piano recital at the Academy of Music in Allentown, Pennsylvania on March 2, 1897 and again on November 18, 1897. He returned to England and was married to an refined Austrian lady, born in Vienna named "Therese" in June of 1899 in Dover. They moved to Paris where they lived together. About 1904, they had a son named "Leonard" or "Leo". He was born in "St. Brio, France". At the age of 40, on January 30, 1916, he arrived in New York from Rotterdam, Holland on the S.S. Rotterdam and started a piano school for advanced-level pianists in New York City. His wife Therese and his 15 year old son Leonard would come to America 2 years later on the liner S.S. Chicago on June 23, 1918. It is believed she separated from him short time after arriving in the United States. She was working as a governess for a prominent family in New York in 1930. She died in 1961 in Los Angeles... she was never to marry again. Some of his compositions were: "Etude De Concert," "Sketch," "Moto Perpetuo," "Souffrance," "Valse de Concert," "Nocturne," "Variations et Fugue," "Cornemuse," "Praeludium", and "L'Angelus". Besides composing piano music, Martinus would arrange and perform other famous compositions especially arranged for piano rolls in player pianos, many of these piano rolls are found in antique shops today. In 1941, at age 74, he became a United States citizen. He passed away on November 26, 1950 at the age of 83 in Pasadena, California. He was recently found to be buried at Mountain View Cemetery and Mausoleum in Altadena, California.