You guys do know they didn't actually work with her, right?
Like Dmitry said, it's a reference to Between Two Ferns. It was a joke. She was in Lincoln so they put Linkin Park under her name XD I'll find a link.
IBG, RU, and POWERLESS must debut at some point. They usually play every song of each album (except Robot Boy for ATS) so I think all of the LT songs will be played at some point.