Mambo No. 5 began as an instrumental mambo by Cuban composer Pérez Prado, released in 1949 and built around repeated brass riffs. German singer Lou Bega reworked it in 1999, adding English lyrics that name-check Monica, Erica, Rita and others over the original groove. His version became a worldwide number one hit and a staple of weddings, sports arenas and late nineties pop culture. Online, the familiar intro and chant keep returning in edits because listeners recognise the song within seconds, even decades after its chart peak.