Simplify the following text for a Grade 6 native English-speaking person.
Original: The program 's closing theme song , sung by McAllister , was called Kids Are People Too ( `` wacka-doo , wacka-doo , wacka-doo '' ) which was later adapted as the show 's title when ABC picked it up as a Sunday morning kids show .
Simplified: McAllister sang the program 's closing theme song . It was called Kids Are People Too ( `` wacka-doo , wacka-doo , wacka-doo '' ) .