Complex sentence: The Paléo Festival de Nyon, usually just called Paléo, started in a small way in 1976 as the Nyon Folk Festival, and is today the second biggest open-air music festival in Europe, after the Sziget Festival.
Split into simpler sentences: The Paléo Festival de Nyon, usually just called Paléo, started in a small way in 1976 as the Nyon Folk Festival. But today it is the second biggest open-air music festival in Europe, after the Sziget Festival.