Karl Ludwig Wilhelm Gerok (27 January 1906 – 28 June 1975) was a German organist, composer and organ teacher.
Karl Ludwig Gerok was born in Oberfischach, the grandson of Karl von Gerok [de], a Stuttgart prelate and preacher (Oberhofprediger) at the Schlosskirche, the court church of the Stuttgart palace, and the author of Palmblätter.
[2] He worked from 1946 as an organ teacher at the School of Church Music (Kirchenmusikschule) in Esslingen am Neckar and later at the Musikhochschule Stuttgart where he taught Künstlerisches und liturgisches Orgelspiel (Concert and church organ playing).
During this time he was also a significant contributor and editor of the collection Württembergisches Choralbuch, which includes 15 chorale preludes on hymns such as "Aus tiefer Not schrei ich zu dir", "Herzliebster Jesu" and "Gelobt sei Gott im höchsten Thron".
Prelude on "Christ ist erstanden" (1933) and "O Traurigkeit, o Herzeleid" (1940) appeared in Neue Choralvorspiele zu den Liedern des Evangelischen Kirchengesangbuchs (New chorale preludes to songs of the Protestant hymnal) in Tübingen in 1976.