Possible Clues:

• The king of Spain?
• 'Viva ___!'
• The king, in Spain
• Juan Carlos, to his people
• Title for Juan Carlos I
• The king: Span.
• The king, in Córdoba
• Tito Puente's nickname
• Landmark Los Angeles theater whose name means "the king"
• __ de Timbales: Tito Puente's nickname