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The E.N.D. (an abbreviation of, and subtitled The Energy Never Dies) is the fifth studio album by American group Black Eyed Peas, released on June 3, 2009. Critics described the album as containing more anthemic and inspirational songs in the group's bid to appeal to a new generation of music listeners.

Three promotional singles, "Imma Be", "Alive" and "Meet Me Halfway", were released through the iTunes Store in the three weeks running up to the album's release. The album gave the group their first, second, and third US number one hits with "Boom Boom Pow", "I Gotta Feeling", and "Imma Be" which topped the Billboard Hot 100 for 12, 14, and 2 weeks respectively. "Boom Boom Pow" and "I Gotta Feeling" led the Hot 100 back to back, putting the band at number 1 on the chart for a record-breaking 26 consecutive weeks (half a year). The third single, "Meet Me Halfway", along with the first two, topped several charts around the world including the United Kingdom and Australia. As of June 2011, the album has sold over 11 million copies worldwide, making it one of the biggest commercial successes for the music industry in recent years.

The E.N.D. was nominated for six Grammy Awards in 2010, including Album of the Year, and Record of the Year for "I Gotta Feeling", and won the award for Best Pop Vocal Album. To promote the album, the band embarked on The E.N.D. World Tour between September 2009 and November 2010.