Live Nation is the largest event exhibitor in the world. The company held more than 28,000 events in 18 countries in 2007 and generated more than $4 billion in revenue. Live Nation owns, operates, or owns booking rights to more than 155 venues and hosts events ranging from live concerts to specialized motor sports races. In 2005, Live Nation was spun off from Clear Channel Communications. The company is based in Beverly Hills, Calif.