During later stages of Francoist Spain, folkloric and religious celebrations in Catalan resumed and were tolerated. Use of Catalan in the mass media had been forbidden, but was permitted from the early 1950s in the theatre. During the 60s and 70s the Catalan music entered into a period of renewal and growth known as Nova Cançó. Initially appeared with Els Setze Jutges group, it quickly became a mass phenomenon that incorporated the protest song against the Dictatorship and helped bring forth prominent singers and groups such as Joan Manuel Serrat, Lluís Llach, Raimon, Maria del Mar Bonet, Ovidi Montllor or Grup de Folk.