To answer Ed at the top of the thread, I'd like to see a series that began with the historical folk song, troubadours through broadsides. The collectors, their ambition, motivation and legacy. The impact of music hall and tinpan alley. The revival of the 50s and 60s, the rise and fall of clubs. Political songs and religious folk songs. The singer songwriter and their identification with folk. Living folk - football chants, playground songs, etc. That would do for starters.