Yes, that's bangingPerpetual Loop, with Charles Howard, and the sublime voice of Elvya.
I put jump on the duke box decades ago.I have, and I shall now listen..
I loved Tom Robinson. Used to get the TRB newsletter.IMHO, perfectly captures the essence of its era.
Another thing that happened in '79 was I joined the gaming group that I am now the elder statesman of. It never got a mention in Tom Robinson's song, though...