Complex sentence: During the 1996 Cultural Olympiad, the Youth Orchestra performed to sold out audiences and was the featured orchestra at the Closing Ceremonies of the 1996 Olympic Games that was broadcast worldwide.
Split into simpler sentences: During the 1996 Cultural Olympiad, the Youth Orchestra performed to sold out audiences. The Youth Orchestra was also the featured orchestra at the Closing Ceremonies of the 1996 Olympic Games and broadcast worldwide.