BACH. Johann Sebastian Bach, the most eminent of the world's organ-players and contrapuntists, was born at Eisenach, March 21, 1685, and was the most illustrious member of a long line of musicians, the Bach family having been famous almost from time immemorial for its skill in music. He first studied the piano with his brother, Johann Christoph, and the organ with Reinecke in Hamburg, and Buxtehude in Luebeck. In 1703 he was court musician in Weimar, and afterwards was engaged as organist in Arnstadt and Muehlhausen. In 1708 he was court organist, and in 1714 concert-master in Weimar. In 1718 he was chapel-master to the Prince von Koethen, and in 1723 was appointed music-director and cantor at the St. Thomas School in Leipsic,--a position which he held during the remainder of his life. He has left for the admiration of posterity an almost endless list of vocal and instrumental works, including chorales, motets, magnificats, masses, fugues, and fantasies, especially for organ and piano, the "Christmas Oratorio," and several settings of the passion, of which the most famous are the "St. John" and "St. Matthew," the latter of which Mendelssohn introduced to the world in 1829, after it had slumbered an entire century. His most famous instrumental work is the "Well-tempered Clavichord,"--a collection of forty-eight fugues and preludes, which was written for his second wife, Anna Magdalena Bach, to whom also he dedicated a large number of piano pieces and songs. His first wife was his cousin, Maria Barbara Bach, the youngest daughter of Johann Michael Bach, a composer of no common ability. By these two wives he had twenty-one children, of whom the most celebrated were Carl Phillipp Emanuel, born in 1714, known as the "Berlin Bach;" Johann Christoph Friedrich, born in 1732, the "Buecheburger Bach;" and Johann Christian, born in 1735, who became famous as the "London Bach." Large as the family was, it is now extinct. Bach was industrious, simple, honest, and God-fearing, like all his family. He was an incessant and laborious writer from necessity, as his compensation was hardly sufficient to maintain his large family, and nearly all his music was prepared for the service of the church by contract. The prominent characteristics of his work are profound knowledge, the clearest statements of form, strength of logical sequences, imposing breadth, and deep religious sentiment. He was a favorite of Frederick the Great, who upon one occasion made all his courtiers stand on one side and do homage to the illustrious composer. "There is but one Bach," said the monarch. With all Bach's amiable qualities, it is said that he had a hasty temper. While playing one day, Goerner, the organist at St. Thomas, struck a false chord; whereupon Bach flew at him in a passion, tore off his wig and threw it at him, exclaiming: "You ought to have been a cobbler, instead of an organist!"