"Everyday I Write the Book" singer

• Actress Dolores
• Rocker Elvis whose aim is true
• Half of a 1940's-50's comedy duo
• He didn't know Who's on first
• Songwriter and entertainer first off breaking instrument
• "Radio Radio" rocker
• He asked "Who's on first?"
• "Who's on first?" asker

Wikipedia Word definitions in Wikipedia
Costello is an American television sitcom that aired from September 15, 1998 to October 13, 1998.