The Foo Fighter have released the second single from their upcoming album, a rocker called “Under You.” The song, about missing someone special, appeares to be about the band's late drummer Taylor Hawkins. The Foos will also present a free global streaming event they are calling Foo Fighters: Preparing Music For Concerts. It debuts this Sunday afternoon and promises to include the debut performances of songs from their new album as well as exclusive behind-the-scenes footage and "some surprises."