 The famous theme song, "Meet the Flintstones", wasnt introduced  until the third season. The song was first introduced on a  childrens record, performed by the TV cast, and included verses  about Barney and Betty Rubble as well as Dino. The first season used  an instrumental piece of music called "Rise and Shine" that  resembled the later Bugs Bunny/Road Runner Show theme "Overture."  When the series went into syndication, a standardized set of opening  and closing credits was used for most episodes in order to remove  references to first season sponsor Winston Cigarettes, thus all  episodes now begin with "Meet the Flintstones".