In 1974, Paramount sold its record holdings to ABC (the network on which The Brady Bunch had aired). ABC, in turn, sold their record holdings to MCA in 1979.
"If you have fond memories of watching The Brady Bunch while growing up or if you have all the episodes on tape, there's no escaping it — It's A Sunshine Day: The Best of the Brady Bunch is indispensable" - Stephen Thomas Erlewine for Allmusic.