There are many possibilities for melodies to go over the Em – D chords that accompany the round Hey, Ho, Nobody Home. Here are some of my ideas on this with your DAD-tuned dulcimer with a capo on the first fret. The basic idea is that you go right up the basic 6-tone (or hexatonic) scale (E – F# – G – A – B – D), and then come right back down. You can go up to the 5th of the Em chord (B) and then come down if you want, and then you can decorate these bare-bones lines a little bit. This is basically how the TAB is set up, but try to use your imagination, remembering that two beats on Em – then two beats on D —- this is the basic reference structure.  (this could be played on any instrument that plays chords, or on another dulcimer, but for our purposes here, it is a silent little structure that runs in the background)