Lost Lost

As if a five-hour finale night wasn't enough, ABC is adding another event to the Lost farewell lineup.

The penultimate episode will be screened a week before it airs at "Lost Live: The Final Celebration." Several cast members — including Nestor Carbonell, Michael Emerson and Jorge Garcia — will attend the event, which will take place at Royce Hall in Los Angeles on Thursday, May 13.

Will you watch all five hours of Lost's series finale night?

Prior to the screening, Oscar-winning composer Michael Giacchino will conduct a live orchestral performance of his original music from the hit ABC series.

All proceeds from the concert will go to the Colburn School of Performing Arts.