Conversation so far:
What kind of vocal style does Sakis Rouvas have?
These criticisms diminished by the second decade of Rouvas' career; his technical skills (range, power and versatility in particular) and expression are better appreciated.
What criticisms did he receive?
Rouvas' detractors have criticized his voice as average, or limited, contending that his appeal is based on image.
What other criticisms are there?
CANNOTANSWER.
Is there anything liked about his vocal style?
Reviewers have praised Rouvas' live performances, particularly his ability to execute "especially difficult and demanding songs", hold long, high notes and dance while singing.
Are there any examples of difficult songs he sings?
"especially difficult and demanding songs".

Question: Are there any influences to his vocal style?
Self-contained rewrite: Are there any influences to the vocal style of Rouvas?