an Entity references as follows:
O holder Tag, erwünschte Zeit (O lovely day, o hoped-for time), BWV 210.2, BWV 210, is a secular cantata by Johann Sebastian Bach. He wrote the solo cantata for soprano in Leipzig for a wedding and first performed it between 1738 and 1746. Bach used material from a "Huldigungskantate" (homage cantata), O angenehme Melodei, first performed in January 1729.