Rodeheaver established a legacy by influencing, inspiring, and encouraging others to use the trombone in large-scale Christian evangelism. His missionary work took him, always with his trombone, to many parts of the world, and included a supposedly successful attempt to preach from an airplane with his trombone in tow.
This according to “Homer Rodeheaver: Reverend Trombone” by Douglas Yeo (Historic Brass Society journal XXVII  pp. 57–88).
You can listen to a recording of Rodeheaver playing the trombone here.
BONUS: Rare footage of Rodeheaver with Billy Sunday; Rodeheaver starts conducting audience hymn singing with his trombone around 2:00.