Update: So we now have confirmation from the band that they were readying a new song, Invisible, for AIDS and Product (Red). Details here.
Thanks to Alan Cross for this.
The last few days it appears that U2 have been up to something in Santa Monica, California. They have been holed up at Barker Hangar. Lots of security.
Not sure if this is tour practice, video filming, Super Bowl ad filming or something else. Or all of the above.
Some audio has been captured despite the protection detail. Capture what you can from it.
Alan Cross’ post can be seen here.