Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
2005 compilation album by The Partridge Family
Come On, Get Happy! The Very Best of The Partridge Family
Come On, Get Happy! The Very Best of The Partridge Family (2005)
Come On, Get Happy! The Very Best of The Partridge Family is a greatest hits compilation album from The Partridge Family released on May 3, 2005, in conjunction with the first season DVD collection. It contained some previously unreleased songs. During the course of the television series there were a number of recordings that were used on the program but never released on album or tape in stereo. Some were alternate mixes of released songs. These are known to fans as the "Lost Songs", four of which appear on this collection (tracks 4, 9, 10 and 12). They are noted as "new release" in the track listing below. Two of the songs appeared in the pilot episode of the show, tracks 9 and 12, listed below as having Ron Hicklin doing the vocals. Originally, the only cast member who was supposed to sing was Shirley Jones. After the producers heard David Cassidy's demos of the songs, however, they decided to let him sing after the first couple of episodes.
Tim Sendra of AllMusic concludes his review with, "Whether the unreleased four songs belong on a" Very Best Of" collection is up for debate: On one hand it might have been better to add more songs that people remembered. but on the other it is nice to have the rarities unearthed. Either way, this is the best Partridge Family collection available."
Come On Get Happy! The Very Best Of The Partridge Family (liner notes). The Partridge Family. Arista Records. 2005. 82876 68199 2.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)