The final day of the twelve days of Christmas (and this season of Christmas songs) is also known as Ephiphany.
The focus (principally) seems to be on the visitors who came to honour the one born to be king.
Whether they were kings, wise men, sages, or scholars and whether there were three or more is not the main point.
The main point is that they came from from afar to worship Jesus.

Here’s a song I’ve never featured before (or heard of before) What Star Is This With Beams So Bright translated by John Chandler from the original lyrics of Charles Coffin.

This rendition provides verses 1,2, and 4.

The lyrics:
1
What star is this, with beams so bright,
More lovely than the noonday light?
’Tis sent to announce a newborn King,
Glad tidings of our God to bring.
2
’Tis now fulfilled what God decreed,
“From Jacob shall a star proceed;”
And lo! the eastern sages stand
To read in heav’n the Lord’s command.
3
The guiding star above is bright;
Within them shines a clearer light,
And leads them on with pow’r benign
To seek the Giver of the sign.
4
O Jesus, while the star of grace
Impels us on to seek your face,
Let not our slothful hearts refuse
The guidance of your light to use.
5
To God almighty, heav’nly Light;
To Christ, revealed in splendor bright;
To God the Spirit now we raise
A never ending hymn of praise.