"What Is Love" is a song by Trinidadian-German singer Haddaway, released as his debut single from his debut album, The Album (1993). The song, both written and produced by Dee Dee Halligan and Karin Hartmann-Eisenblätter, was released by Coconut Records in January 1993. It was a hit across Europe, becoming a number-one single in at least 13 countries and reaching number two in Germany, Sweden and the United Kingdom. Outside Europe, the single peaked at number 11 in the United States, number 12 in Australia, number 17 in Canada, and number 48 in New Zealand.

Hennef (Sieg) (German pronunciation: [ˈhɛnɛf] ) is a town in the Rhein-Sieg district of North Rhine-Westphalia, Germany. It is situated on the river Sieg, approx. 7 kilometres (4 miles) south-east of Siegburg and 15 km (9 mi) east of Bonn. Hennef is the fourth-biggest town in the Rhein-Sieg-Kreis (i.e. district). It is the site of the 15th-century castle, Schloss Allner, next to the Allner See. Within Hennef is the town of Stadt Blankenberg, with the castle of Blankenberg.