In September 2009, the group embarked on The E.N.D World Tour, visiting Japan, Thailand, Malaysia, Australia, and New Zealand. In October 2009, they also were the opening acts for 5 concerts of the U2 360° Tour North America leg. The group performed at the Grammys on January 31, 2010. They performed a mash-up of "Imma Be"/"I Gotta Feeling". They won three awards out of the six nominations, including Best Pop Vocal Album for "The E.N.D.", Best Pop Vocal Performance by a Group for "I Gotta Feeling", and Best Short Form Video for "Boom Boom Pow".