Tolong jelaskan mengenai Leonardo DiCaprio (presenter) dari Konser Live Earth

Keith Urban - "Gimme Shelter" (with Alicia Keys), "Days Go By", "Stupid Boy", "I Told You So"

Ludacris - "Number One Spot", "Stand Up", "Yeah", "Pimpin' All Over the World", "Runaway Love", "Glamorous", "What's Your Fantasy", "Move Bitch" and "Money Maker"