Which preposition to use with roundelays

Of Occurrences 4%

This love enticeth him abroad to walk, There to invent and write new roundelays Of learn'd conceit, her fancies to allure To vain delights: such humours he allays, And sings of virtue and her garments pure.

at Occurrences 1%

was all the maiden said, As she streamed her golden tresses through the half-unkneaden bread, While the sunset light came sheening athwart the oaken floor, And the Headsman chanted his roundelay at the soul-beshriven door.

Which preposition to use with  roundelays