Kazantzidis, however, did not only contribute to the demise of classical rebetika (of the Piraeus style that is). Paradoxically, he was also one of the forerunners of its revival. In 1956 he started his cooperation with Vassilis Tsitsanis who, in addition to writing new songs for Kazantzidis, also gave him some of his old ones to reinterpret. Kazantzidis, thus, sung and popularized such rebetika classics as 'Synnefiasmeni Kyriaki' (Clouded Sunday), ""Bakse tsifliki"" and ""Ta Kavourakia"". These songs, and many others, previously unknown to the wider public, suddenly became cherished and sought-after.