Complex sentence: In 1974, came the Metapolitefsi, the transitional period following the fall of the dictatorship, and Vasilis returned to Greece where upon he embarked in a professional singing career, singing in clubs and recorded a 45 rpm gramophone record.
Split into simpler sentences: In 1974, came the Metapolitefsi, the transitional period following the fall of the dictatorship, and Vasilis returned to Greece. He sang in clubs and recorded a 45 rpm gramophone record.