Prince Ulrik John of Denmark was the song of Frederick II of Denmark, the King of Denmark and which other country?
Ulrik of Denmark (1578–1624) Prince Ulrik John of Denmark, (Koldinghus Palace, Kolding, 30 December 1578 – 27 March 1624, Rühn) was a son of King Frederick II of Denmark and his consort, Sophie of Mecklenburg-Güstrow. As the second-born son he bore the merely titular rank of "Duke of Holstein and Schleswig, Stormarn and Ditmarsh" and had no share in the royal-ducal condominial rule of Holstein and Schleswig, wielded by the heads of the houses of Oldenburg (royal) and its cadet branch Holstein-Gottorp (ducal). Since 1602 he held the religiously defunct position of "Bishop of Schleswig", enjoying the revenues of the implied estates and manor. The year after he succeeded his grandfather as "Administrator of the Prince-Bishopric of Schwerin", holding both posts until his death.
Denmark in the Eurovision Song Contest 1978 Denmark was represented by the band Mabel, with the song "Boom Boom", at the 1978 Eurovision Song Contest, which took place on 22 April in Paris. "Boom Boom" was chosen as the Danish entry at the Dansk Melodi Grand Prix on 25 February, and marked Denmark's return to Eurovision after an 11-year absence. Other participants in the 1978 DMGP included both Denmark's Eurovision winners, Grethe Ingmann and the Olsen Brothers.