"I Gotta Feeling" is the second single from The Black Eyed Peas' fifth album The E.N.D., produced by French DJ David Guetta.The song was released on May 21, 2009 and debuted at number two on the Canadian and Billboard Hot 100, behind the group's "Boom Boom Pow", making the group one of 11 artists who have occupied the top two positions of the Billboard Hot 100 at the same time. It reached number one on the US charts and 20 charts worldwide.

The song was nominated for Record of the Year at the 52nd Grammy Awards and won the Grammy for Best Pop Performance by a Duo or Group with Vocals. "I Gotta Feeling" was 5th on the Billboard Hot 100 Songs of the Decade.The song was also nominated as Song of the Year at the 2009 World Music Awards. In March 2011, it became the first song in digital history to sell over 7 million digital copies in the United States. As of June 2019, "I Gotta Feeling" has over 9 million downloads in the country, and it currently holds the record as the most downloaded song on iTunes of all time. This also makes it the highest selling digital as well as non-charity single in the US ever.