Recording and Producing
It's obvious there's more to a song demo than just words and melody; there's the tempo (how fast or slow a song is), the key (you'd be surprised how raising or lowering the key by just a half-step can effect the dynamic energy of a piece), the over-all "feel" of the song: is it straight-ahead country, shuffle, cowboy cha-cha, four-on-the-floor? What's the Intro like; four measures, eight? And do you have a particular melody (hook) in mind; played by what- the fiddle, piano, fiddle and piano? Is there a solo section? Have you determined which instrument(s) will play it?