Conversation so far:
What did Sakis Rouvas do in his early commercial success?
Rouvas moved to Athens, and made his first professional appearance in 1991 at the Show Centre.
What did Sakis Rouvas do at the Show Centre?
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 do other performances besides the Show Centre?
Several months later he debuted at the Thessaloniki Song Festival.
Was Saki Rouvas's performance at the Thessaloniki Song Festival a success?
Rouvas lost Best Vocal Performance to Giorgos Alkaios but sang the Best Composition. There was a brief earthquake during the festival.

Question: Did he perform anywhere else?
Self-contained rewrite: Did Sakis Rouvas perform anywhere else besides the Thessaloniki Song Festival?