The Assen Andante contains some of the most interesting harmonies in The Callum Collection (Opus 7).  Enjoy the F# in bar 34.  There is deliberate avoidance of a perfect cadence in the tonic key during much of the composition. While the full range of the keyboard is used with some passages that may appear potentially intimidating, it is easier to play than it looks at first sight.  The ending should be played with great sensitivity.