This is the instrumental version of the HB Friends Promo song used in the promo of the same name. The regular version is featured on the HB Friends Who's Who? bonus feature at the end of VHS tapes from Hanna-Barbera Home Video in 1990, but I recorded the instrumental version (this version) from the end credits to the bonus cartoon short "Dino and the Flintstone Kids" on the VHS release of Top Cat: The Grand Tour.