“Sweet Dreams” is a song by American R&B singer Beyoncé Knowles from her third studio album, I Am… Sasha Fierce (2008). Written and produced by Knowles, James Scheffer, Wayne Wilkins, and Rico Love, the track was released as the album’s sixth single. It was solicited to U.S. Top 40and rhythmic contemporary radios on June 2, 2009. An unofficial remix featuring Lil Wayne and Nicki Minaj was included on the No Ceilings mixtape.

The single has peaked at number one in New Zealand. The song has also peaked inside the top five in the United Kingdom, Australia, Slovakia, Czech Republic, Greece, Ireland, Poland, Portugal, Russia and Hungary and the top ten in the United States, Germany, Turkey and Norway.

http://en.wikipedia.org/wiki/Sweet_Dreams_(Beyonc%C3%A9_Knowles_song)