Below are some hymns about the trinity that you can sing and learn about their origin.
All Creatures of our God and King
All Hail the Power of Jesus’ Name
As the Sun Doth Daily Rise
Come Holy Ghost Creator Come
Come Thou Almighty King
Come, Holy Ghost, Our Hearts Inspire
Come, Now Almighty King
Creator of the Stars of Night
Eternal Father Strong to Save
Father, We Praise Thee
Firmly I Believe and Truly
For the Beauty of the Earth
Glory be to God the Father
Hail Co-essential Three
Holy God, We Praise Thy Name
Holy Spirit, Truth Divine
Holy, Holy, Holy, Lord God Almighty
How Great is our God
I Bind unto Myself Today
I Sing the Almighty Power of God
Immortal, Invisible, God Only Wise
Joyful, Joyful we Adore Thee
Lead us Heavenly Father Lead Us
Lo, He Comes with Clouds Descending
Many and Great
Most Ancient of all Mysteries
On this Day, the First of Days
Open My Eyes, That I May See
Praise Ye the Father
Sing, My Tongue, the Glorious Battle
Thou Whose Almighty Word
To God the Father, God the Son, And God the Spirit, Three in One
We all Believe in One True God
Ye Watchers and Ye Holy Ones