Answer:
Christ lag in Todes Banden "Christ lay in death's bonds" or "Christ lay in the snares of death"),
a chorale cantata, a style in which both text and music are based on a hymn. In this instance, the source was Martin Luther's hymn of the same name, the main hymn for Easter in the Lutheran church.
cantus firmus the composition is based on the seven stanzas of the hymn and its tune, which was derived from Medieval models. Bach used the unchanged words of a stanza of the chorale in each of the seven vocal movements, in the format of chorale variations per omnes versus (for all stanzas), and he used its tune as a cantus firmus.
Explanation:
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