Presentation takes place in October in Washington
Barack Obama would have bought almost all the tickets for a future presentation of Two Door Cinema Club.
The U.S. president, a big fan of indie band, reserved seats for a show of Northern Ireland to be held in October in Washington.
The members Alex Trimble, Kevin Baird and Sam Halliday added a second date in the U.S. capital for other fans to have the opportunity to see them too.
"Alex was very pleased to hear that the U.S. show was sold almost entirely to Barack and his team," a source told the tabloid The Sun
"They think the really cool fact that the president of the USA have their songs on your iPod. You can not have a fan more important than him."
"Sleep Alone", whose video was released earlier this month, is the first single from the album "Beacon," which hits the market between 3 and 4 September.