"Happy Anniversary" is a pop music song by Australian group #LittleRiverBand, released in territories outside of Australia in December 1977 as the fourth and final single from the group's third studio album, #DiamantinaCocktail (April 1977). It was co-written by #BeebBirtles and #DavidBriggs. The song became the band's second top twenty single in the United States, peaking at number 16 in March 1978 on the Billboard Hot 100.
https://youtu.be/ZDhqTPJ0-5c