I Really Want To Know You - Partridge Family 

That's "still" a big, untold mystery of exactly HOW MUCH Jones' vocal was mixed onto the 16 channel multi-track. It was revealed that she did add her part later, interwoven with The Ron Hicklin Singers (producer Wes Farrell's contracted singing quintet for ALL of the television programs AND the slightly remixed versions for the LPs) but my totally unfounded guess, yet based on ALOT of research, that the line, "Secret World" was probably sung by Hicklin's mezzo-soprano, Miss Jackie Ward. We can sometimes let the video "fool our eyes & ears" especially with the emotion of the song itself, but when it came to EXACTLY who was on that female sung line, my vote goes towards Ward and not Jones. One key element, the very first album, oddly enough entitled "PARTRIDGE FAMILY ALBUM" was recorded in 1969, almost a year before the television show was approved by Screen Gem Productions, to start filming episodes in 1970, so with that timeframe in mind, it would have been unlikely (not 'impossible' however) that Jones' was not even cast yet, when Wes Farrell & Ron Hicklin started with the audio production. I "may" be wrong, but I reckon I am not. Hmmmmm... BolsaChicaRadio