"Ach Gott, wie manches Herzeleid" (Oh God, how much heartache) is a German hymn in 18 stanzas attributed to Martin Moller (1587). It is often catalogued as a paraphrase of the Latin "Jesu dulcis memoria", a medieval hymn attributed to Bernard of Clairvaux, but only a few lines refer directly to this song. Hymn tunes were composed for the hymn (Zahn Nos. 547–549), and it is also often sung to a tune composed for "Herr Jesu Christ, meins Lebens Licht" (Zahn No. 533). The anonymous hymn tune of "Herr Jesu Christ, meins Lebens Licht" first appeared in Wolflein Lochamer's Lochamer-Liederbuch, printed in Nürnberg around 1455. In Leipzig in the 1720s, Johann Sebastian Bach composed settings of Lochamer's hymn based on four of his church cantatas and a sacred motet.