Elvis brought two songs by Olivia Newton John into his setlist in 1974. The first of those was 'Let Me Be There' which was introduced in the January 1974 Las Vegas engagement during the opening show on January 26.
The second of those two sings to be introduced into hias setlist was 'If You Love Me (Let Me Know)' and the latter would have a longer prescence in Elvis' repertoire. It would often be used as an alternate with 'Fairytale' in the later concets of the 70's.
Whilst 'Let Me Be There' was heard on an album the same year as it was introduced, on the 'Live in Memphis' album 'If You Love Me' would have to wait until his final studio album 'Moody Blue' where it was used as an album filler as RCA did not have enough material from the Jungle Room sessions to complete two albums.
Elvis never recorded either song in the studio but thanks to onofficial and official FTD releases there are now plenty versions of both songs to be heard.
This particular version of 'If You Love Me' was filmed on 21 June 1977 in Rapid City, South Dakota in front of CBS' cameras for what would become 'Elvis In Concert' but did not make the final edit.
It did however make it into the accompanying RCA double LP album in 1977 amongst the extra songs.