Question: What was roy orbison's first number one hit?
Disambiguated questions and answers: question: What was Roy Orbison's first number one hit in the US Hot 100 and Canada?
What was Roy Orbison's first number one hit in the UK and Ireland?
answer: "Running Scared"
"Only the Lonely (Know the Way I Feel)"
Natural Questions answer: Running Scared (from the Wikipedia article "Roy Orbison")