"Les Chakachas- Ego Kai To Gaidouraki Mou-Ta Paidia Tou Peiraia-1960 single Greece":

Les Chakachas formed in Belgium in late 1950s by pianist Nico Gomez and percussionist Gaston Bogaert.They were imitators of the Latin sounds that were taking the world by storm at the time, from cha cha, to mambo to hybrid exotica to rumba. They made records and seldom played outside Brussels.
This single recorded in Greece in 1960."Ego Kai To Gaidouraki Mou" written By Mouzakis, Economidis and "Ta Paidia Tou Peiraia (Never On Sunday)" written By Manos Hadjidakis. (vinyl rip)

-by dj fanis: here