The text above the image (transcribed by someone not fully familiar with Latin mergings of letters with an attemped translation by Google):
Bonu est con fiteri dno
& pssallere nominituio altissime
ad adnuntuandummane misdiatuia
auerutatem tuam pnostem
indecacondo salterio
cum cantuco incythara
It is a good thing
to sing the praises of the Lord,
and to praise the name of the highest,
to announce in the morning your faithfulness,
with an unbroken psaltery
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Captions
Psalterio or cythara (from the Stuttgart Psalter).
Représentation d'un psaltérion ou cythare dans le psautier de Stuttgart.