I know it’s true of the Discalced Carmelites and probably true for other Orders that special hymns in honor of Saints of those Orders have been written to be sung on their given Feast Days. Most of these hymns end in a praise of the Most Holy Trinity, e.g., this is the hymn for the Feast of All Carmelite Saints (Nov. 14):
*O Saints of Carmel, throned above
In Mary’s court, obtain this grace
That where you are in glory now
We, too, may find a resting-place.
May hosts of martyrs intercede
For us on earth, confessors pray
And choirs of holy virgins pleads
That God may wash our sins away.
O blessed saints of solitutde,
And all the heavenly company,
Obtain for us that life in God
Which lasts for all eternity.
Praise to the Father evermore
And to the Spirit he bestows,
To Jesus whom that Virgin bore
From whom all Carmel’s beauty flows.*