The following Hymn is found in several Antiphonale c. 1200 – 1300  and  in an Antiphoner printed in Cologne in 1537, this hymn was also used for the Feast of St Peter’s Chains.

Petre, Pontifex Inclite,  Vespers Hymn for the feast of St. Peter’s Chair.

One of the many Hymns used in the Mozarabic Rite,

O Petre Petra Ecclesiae, Mozarabic Hymn for the feast of St. Peter’s Chair.

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