Chorale Prelude 'Ich ruf zu dir Herr Jesu Christ', BWV 639
Ich ruf zu dir Herr Jesu Christ, BWV 639, is a piece of the Orgelbüchlein (Little Organ Book) by Johann Sebastian bach, a collection of 46 preludes for organ almost exclusively written during the 1708-1717 period, while Bach was court organist in Weimar. The collection is defined by Bach himself in the title page as '[a book] in which a beginning organist receives given instruction as to performing a chorale in a multitude of ways while achieving mastery in the study of the pedal, since in the chorales contained herein the pedal is treated entirely obbligato'.
