The series ORGAN PLUS ONE contains pieces which are freely-composed or based on hymn tunes, both original works as well as arrangements. The editions include solo parts in C, Bb, Eb and F, which can be played by violin, flute, oboe, clarinet, trumpet and horn in F. Idiomatic instrumental arrangements and the stylistic variety of the pieces guarantee instant success for both organists and instrumentalists. The contents of the volumes correspond to the seasons of the church year: Divine Service.