Phil Ochs stole the tune sideways for "Love Me, I'm a Liberal": the folk process.
Of "sold": this from Huck Finn (the King has just substituted prancing about in full, painted, monty for Shakespearean tragedy:
"Everybody sings out 'sold,', and rose up mad, and was agoing for that stage and them tragedians. But a big fine-looking man jumps up on a bench,and shouts:
"'Hold on! Just a word, gentlemen.' They stopped to listen. 'We are sold--mighty badly sold. But we don't want to be the laughingstock of this whooe town, I reckon, and never lear the last of this thing as long as we live...'"