|The original text of "O Fortuna", from the Carmina Burana|
O Fortuna is a medieval Latin Goliardic poem written early in the thirteenth century, part of the collection known as the Carmina Burana. It is a complaint about fate, and Fortuna, a goddess in Roman mythology and personification of luck.
The misheard lyrics here make me smile. You can find out more about O Fortuna here, including the actual lyrics and translation.