The potato/potato sketch was by John Fortune.
If you want to hear what the folk have taken to sing today listen to the football songs from the terraces. These are young men who care not a jot for our categories and they sing songs based on songs dating back to the First World War, to music hall, to 60's pop, from many sources,(how they've found some of them baffles me), but to my ears, hardly anything from popular song of the last two decades.