I'm learning anglo. One of the reasons for getting it was to accompany myself - it's quite hard to sing while blowing down a piece of pipe, I find

As a melody player I found playing chords did not really work for me, but I can double the melody reasonably well. Also I tend to play across the rows most of the time, so sometimes finding the right chord can be problematic.

This afternoon I was working on a couple of songs, "Turn, Turn, Turn" and "Tramps and Hawkers" by playing the melody and putting in chords (mostly just two note chords) at the end of phrases. That seemed to work quite well.

Listening to CDs, there seems to be a wide varieties of styles of accompaniment in various combinations of chord and melody.

I like the idea of a single line harmony part. Something to experiment with sometime, though I would need to be really familiar with the song first so I can concentrate on an unfamiliar accompaniment.