The first single "Boom Boom Pow" was released on March 30, 2009 in the U.S. on iTunes. The single sold 465,000 downloads in its first week of digital release, the third-largest number of download sales in a single week overall, and the largest single-week and debut-download totals by a group in the history of digital-download sales, reaching No. 1 on the U.S. The single also reached the top spot in "Billboard" Hot 100 and Pop 100. being the group's first U.S. No. 1, holding the spot for twelve consecutive weeks. It also reached number 1 in Australia, Canada, and the UK. On May 21, the Black Eyed Peas released "I Gotta Feeling" (produced by David Guetta) as the official second single from the album. The single charted at number three and then went to number one on the UK Singles Chart. It debuted at number 2 on the "Billboard" Hot 100 behind "Boom Boom Pow" and later surpassed it, taking the number 1 spot. The Black Eyed Peas joined a group of artists who have held the No.1 and 2 Spot on the "Billboard" Hot 100 simultaneously. From April 18, 2009, when "Boom Boom Pow" reached No. 1, through October 10, 2009, the last week "I Gotta Feeling" was at No. 1, the group was on top of the chart for 26 weeks, more consecutive weeks than any other artist.