Bach, Johann Sebastian, one of the greatest of musical composers, born in Eisenach, of a family of Hungarian origin, noted—sixty of them—for musical genius; was in succession a chorister, an organist, a director of concerts, and finally director of music at the School of St. Thomas, Leipzig; his works, from their originality and scientific rigour, difficult of execution (1685‒1750).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Baccio`chi * Bache, A. Dallas