Looks like a good song to me.
Sorry Art – a date other than the 1970's, given by the originator – and the lyrics helps out…here are a handful from dozens and dozens available.
deadhead n. 1. a person admitted free to a theater, sporting event, hotel, etc. 1841 Spirit of Times (Jan. 23) 564: The house….was filled as far as $300 could fill it, barring "the dead heads." 1925 Robinson Wagon Show 136: Altogether we passed in about seventy-five "deadheads."
2. a sponger or loafer; DEADBEAT 1847 Nat. Police Gaz (Feb. 20) 186: The usual local loungers of a fillage tavern…"Dead heads!" said the stranger, motioning his head derisively towards the trio at the stove. 1889 Barrere & Leland Dict. Slang 298: Dead-head (American) one who stands about at a bar to drink at the expense of others.
7. a dull or lazy individual; (specf.) a person who is present at a meeting, party, or the like, but who does not participate or contribute. 1929 Bookman (July) 525: I'm no deadhead, brother, and I'm always good for a job on the C.&M.
Sincerely,
Gargoyle