Here are some good piano midi's by Ezra Bufford organist for Grace Apostolic.
Amazing Grace
Blessed Assurance
Are You Washed In The Blood
Silent Night
Great Is Thy Faithfulness
Trust and Obey
There Is A Fountain
Day of Redemption
More Midi Files
Because He Lives
Be Exalted O God
Closer Walk With Thee
El Shaddai
Holy Ground
Hosanna
How Great Thou Art
Hour of Prayer
I Exalt Thee
I Love You Lord
Jehovah Jireh
Jesus Loves Me
Lean On Me
Medley (classic gospel)
Medley (patriotic, including Truth MarchingOn)
Mighty Is Our God
No Other Name
Old Time Religion
Revival Fire
Saints Go Marching In (great banjo midi)
Send It On Down Lord
Shine Jesus Shine
Shout To The Lord
The Battle Belongs to the Lord
Watch The Lamb
Wind Beneath My Wings