MARCH
Have You Never Been Mellow by Olivia Newton John
From the album of the same name, and won Olivia a Grammy for Best Female Pop Vocal Performance, but although released as a single in the UK it never reached the charts. The song was written by John Farrer who was once a member of the Shadows.
Olivia was also in a film this year called "The Other Side Of The Mountain", all about a female skiing champion is paralyzed in a tragic skiing accident. Her girlfriend is taken out of competition when she contracts polio.
Of course in 70s music Olivia would have a lot more hits on the way.