Piae Cantiones was created in 1582.

"The tune is based on a 13th century spring carol "Tempus adest floridum" ("It is time for flowering") first published in the 1582 Finnish song collection Piae Cantiones. The "Wenceslas" lyrics were written much later in 1853 by the English hymnwriter John Mason Neale (1818-1866) and substituted for the original Latin (to which they bear no relation) in collaboration with his music editor Thomas Helmore." Source: Wikipedia

Rudolf Rasch has written:

'De cantiones Natalitiae en het kerkelijke muziekleven in de zuidelijke Nederlanden gedurende de zeventiende eeuw' -- subject(s): Christmas music, Church music, Dutch Carols, History and criticism, Latin Carols

stupidest question ever

suzanne vega tom's diner!