"Rapture" (sometimes referenced as "Rapture (Taste So Sweet)") is a song by American recording duo iiO. It was chosen as the lead single from their debut studio album, Poetica (2005). The song was written by both the members; Nadia Ali and Markus Moser, while production was handled just by Moser. The song was released on 29 October 2001 by Universal Records. Musically, the song is a dance-oriented song, which was very popular around the early 2000s. The song also incorporates musical genres of dance-pop, electronica, disco, house, and trance music.

With the song winning positive reviews from music critics, citing it as catchy and one of the best songs of the year, the song was a commercial success. The song charted inside the top ten in countries including Romania, United Kingdom, United States, New Zealand, Australia, Canada and Ireland. It managed to chart inside the top fifty on the US Billboard Hot 100. A music video was also shot, showing the group in a futuristic city with visual lighting.

In 2010, the song was re-released by former iiO frontwoman Nadia Ali as a single from her remix compilation, Queen of Clubs Trilogy: the Best of Nadia Ali Remixed. The song was her most successful solo release peaking at number three in Romania, while charting in several European countries.

At the time, 17-year-old Nadia Ali was working in the New York offices of Versace, when a co-worker introduced her to producer Markus Moser, who was looking for a female singer to collaborate on some of his productions for a girl group. The two teamed up and started a group that was originally named "Vaiio", named after the Sony VAIO laptop Ali used to write lyrics on. They later dropped the "va", on the advice of their label, to avoid causing problems in the future with Sony. Working with Moser, she wrote the lyrics and the vocals for the songs.

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