chirpy female vocals, and a house piano at its fade-out. According to Whigfield, "Saturday Night" is "like a nursery rhyme, with lyrics about what girls do when they're getting ready to go out, and about getting hot when they’re out dancing." The "Dee dee na na na" was initially done as a joke, before they incorporated it as a initial hook. They chose to release the song for its simple, upbeat and club-ready nature, titling it "Saturday Night" to reflect that. The lyrical subject led Simon Cowell to compare it to Rebecca Black's "Friday", stating that they are "what we call a 'hair-dryer song'; a song girls sing into their hair dryers as they're getting ready to go out". Release and commercial performance Initially, no record companies were interested in publishing "Saturday Night". After it was played frequently in the Spanish radio show World Dance Music, interest in the song began to increase. The first label to pick up the song was a small label, Prodisc in Valencia. It was first released in Italy in 1992, then became a number-one hit in Spain at the end of 1993. In the summer of 1994, it became a hit with British holidaymakers on the continent, leading to a huge demand for the track in the United Kingdom. Whigfield was signed for the UK in February 1994 by Christian Tattersfield and Ben Kahn who run London offshoot Systematic. The label decided to delay the release in order to capitalise on the inevitable buzz built up among British tourists returning from summer holidays in mainland Europe. The single was not released in North America until February 1995. "Saturday Night" was released in the UK on 5 September 1994, and went straight to number one - dethroning Wet Wet Wet's 15 week chart-topper "Love Is All Around" on 11 September, despite that single increasing its sales from 65,000 the previous week to 104,000, when "Saturday Night" entered at number one with sales of 150,000. Whigfield was the first act to enter at number one in the United Kingdom chart with her début single. It stayed at number one for a total of four weeks selling 680,000 in the process, went on to become the second best selling single of the year, and has sold a total of 1.18 million copies. "Saturday Night" is also the 15th biggest-selling single by a female artist in the United