Q: Context: The Eurovision Song Contest 1956 was the first edition of the annual Eurovision Song Contest, held at the Teatro Kursaal in Lugano, Switzerland on Thursday 24 May.

Question: when was the first eurovision song contest held?
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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To answer this question, we should know that: The Eurovision Song Contest 1956 was the first edition of the annual Eurovision Song Contest, held at the Teatro Kursaal in Lugano, Switzerland on Thursday 24 May. So the answer is 1956.