Denmark was represented at the Eurovision Song Contest 1979 with the song "Disco Tango", composed by Tommy Seebach, with lyrics by Keld Heick, and performed by Seebach himself. The Danish participating broadcaster, Danmarks Radio (DR), organised the Dansk Melodi Grand Prix 1979 in order to select its entry for the contest. This was the first of Seebach's three Eurovision appearances for Denmark. The 1979 DMGP is notable for the participation of two of Denmark's three Eurovision winners, Grethe Ingmann and the Olsen Brothers.
On the night of the final Seebach performed 3rd in the running order, following Italy and preceding Ireland. Among the backing singers was Debbie Cameron, with whom Seebach would perform as a duo in Eurovision 1981. At the close of voting "Disco Tango" had received 76 points, placing Denmark 6th of the 19 entries.[2] The Danish jury awarded its 12 points to Germany.[3]