The world's first online collaborative orchestra is back, and this time a new round of performers will be playing their part onstage at the iconic Sydney Opera House. It seems like just yesterday that Carnegie Hall was abuzz with a sold-out performance that made headlines around the globe . Ninety-six musicians arrived in New York City, from over 30 countries,

Tonight, thousands of fans will pack into Madison Square Garden in New York City to hear Arcade Fire...but they won't be the only ones experiencing the band's orchestral indie rock roar: the concert will be live-streamed right here at 10 p.m. )ET(. The global webcast will be directed by Monty Python alum and award-winning filmmaker Terry Gilliam, and is the first show in the new "Unstaged" concert series brought to you by YouTube, American Express and Vevo.