elton john
Haroon Syed, 19, from London admitted to researching weapons and potential targets for a terror attack.
He's got an epic plan for the Margaret Court Arena, too.
The star is recovering at home in the U.K.
Is your fave on the lineup?
WHAT'S HAPPENING
Ready for a challenge?
Lady Gaga, Jon Hamm, Katy Perry and Neil Patrick Harris all attended the festive gala.
"I’ll fight for anyone who is misunderstood and misrepresented by the idiots out there."
Oh, and Sir Elton John is writing the music.
Watch James Corden get festive with Mariah Carey, Adele, Lady Gaga, Elton John and more...
Believe it or not, we did have a few things to be grateful for in this year from Hell.