“Twenty Studies for Organ in Trio Style Consisting of Chorales and Well-Known Hymn Tunes” is a collection of organ arrangements made by William H. Oetting. Manuscripts are found in the William Oetting Collection. 

1. O God Our Help in Ages Past (St. Anne)

2. Praise to the Lord (Lobe den Herren)

3. Now Thank We All Our God (Nun danket)

4. The God of Abraham Praise (Leoni)

5. A Mighty Fortress Is Our God (Ein feste Burg) 

6. All Glory, Laud, and Honor (St. Theodulph)

7. O Sacred Head Surrounded (Passion Chorale, by Hans Leo Hassler)

8. How Bright Appears the Morning Star (Frankfort) 

9. All Praise to Thee My God This Night (Tallis Canon)

10. Of the Father's Love Begotten (Divinum Mysterium)

11. O Master Let Me Walk with Thee (Maryton)

12. The Strife Is O'er the Battle Done (Victory)

13. Dear Lord and Father of Mankind (Elton, by Frederick C. Maker)

14. Fairest Lord Jesus (Schönster Herr Jesu)

15. Softly Now the Light of Day (Mercy, by Louis M. Gottschalk) 

16. O Come, O Come Immanuel (Veni Emmanuel)

17. My Jesus as Thou Wilt (Jewett, by Carl Maria von Weber)

18. Abide with Me Fast Falls the Eventide (Eventide)

19. O Jesus Thou Art Standing (St. Hilda)

20. Lead Kindly Light (Lux Benigna)