The group's fifth studio album, The E.N.D. ("The Energy Never Dies"), will be released on June 9, 2009. "Boom Boom Pow" was released on February 22 online and March 30 on iTunes. It has become the group's first song to reach #1, where it has remained for nine weeks, on the Billboard Hot 100, peaking at number 1 in Australia, in Canada, and in the UK. The album has a more techno-funk beat rather than the usual hip/hop and R&B feeling of their previous albums.
The first promo single, "Imma Be," was released for download on iTunes on May 19 in the US, entering the Billboard Hot 100 at number 50 on the week ending June 6, 2009.
Group leader will.i.am told Billboard that The E.N.D. stands for "The Energy Never Dies", which describes his model for a project that will be living and frequently updated throughout its designated cycle. "It's a diary ... of music that at any given time, depending on the inspiration, you can add to it," the artist/producer/songwriter explains. "I'm trying to break away from the concept of an album. What is an album when you put 12 songs on iTunes and people can pick at it like scabs? That's not an album. There is no album anymore." He describes the music as "a lot of dance stuff, real melodic, electronic, soulful. We call it, like, electric static funk, something like that.
The second promo single "Alive" was released for Download on May 26.
The third promo single "Meet Me Halfway" was released for Download in the US on June 2.
They are scheduled as the opening act for U2 on the final dates of their 2009 American tour, with dates at Norman, Oklahoma; Phoenix, Arizona; Las Vegas, Nevada; Los Angeles, California; and Vancouver