Lead singer Bono talked about "Invisible" at the Weinstein Company's 2014 Golden Globes after party on Jan. 12.
He toldShowbiz 411 that "Invisible" is "not your typical love song" and that U2 is still working on its new album, which is set to be released in June.
It will be the group's 13th major studio record and the first released since its 2009 album "No Line on the Horizon."
"Invisible" was produced by Danger Mouse and mixed by Tom Elmhirst.
The band said in its statement that the song "launches a partnership with (RED) and Bank of America to fight AIDS," the message said, referring to the group Bono and Bobby Shriver founded in 2006.
"Every time the track is downloaded, anywhere in the world, a $1 donation will be made to (RED) by Bank of America - up to a total of $2 million," the group added. "All the funds will go to the Global Fund to Fight AIDS, Tuberculosis and Malaria."
