Conversation so far:
When did Sakis Rouvas first start experiencing success?
Sakis Rouvas, singing Michael Jackson's Man in the Mirror was discovered by PolyGram executives who signed him to his first recording contract.
Did Sakis Rouvas have any hits during this early period?
Sakis Rouvas debuted at the Thessaloniki Song Festival, losing Best Vocal Performance to Giorgos Alkaios but singing the Best Composition. Par'ta became a radio hit
What kinds of performing did Sakis Rouvas do besides singing?
Sakis Rouvas is also an actor.

Question: Did Sakis collaborate with anyone during his early success?
Self-contained rewrite: Did Sakis Rouvas collaborate with anyone during his early success?