Lebanese music in the 1960s developed under two main influences. On the one hand, a new national cultural identity was being formed through the music of Fairouz and the Rahbani Brothers and their iconic annual performances (complete with dancers in full folkloric costume) at The Baalbek International Festival, founded in the mid '50s. Traditional Lebanese folk music and singing flourished, evolved and took on new meaning during the 1960s and '70s, and several Lebanese singers became hugely popular across the MENA region, notably Sabah and Wadih El Safi. The other force starting to influence Lebanese music at this time was pop music arriving from the UK. The music of The Beatles and The Rolling Stones, for example, led Lebanese musicians in Beirut to start to experiment and develop a distinctly Lebanese rock'n'roll sound.