What exactly was the reasoning behind the two songs heard on the final season's premiere episode (or the 4th episode of this season if going by production order, which is how it is treated in older syndication), "Adios, Johnny Bravo" (9-14-73), being recorded for this episode but not also released on an LP?

Those two songs are:
"You've Got to Be in Love (To Love a Love Song)" (heard when the episode begins)
"Good Time Music" (heard before the final commercial break)

According to the liner notes for It's a Sunshine Day: The Best of The Brady Bunch, these two songs were "never released," so consequently you at least never get to hear the full-length versions. How could they not be released at all, if they were only heard on the episode in question?

~Ben

I like both those songs. I wish they had released them.

Before the start of the 5th season most of the Brady kids hired a new manager who demanded big raises and other perks for his clients reasoning that the kids were the real stars of the show. This caused a lot of tension between the kids and Sherwood Schwartz/Paramount. One of the results of that tension wasthat the kids no longer recorded albums as the "Brady Kids". Therefore these two songs from season 5 were never recorded or released.

Odd.