I think the punctuation should be Lovers’, not Lover’s, on the grounds that it is a concerto for all lovers, not just one. It was recorded in 1965 by the Toys, who reached No 2 in America and No 5 in Britain. I love this video – the girls look as if they have no bones in their arms.
This is the tune on which the song’s melody is based, Minuet in G Major, formerly attributed to J S Bach but now thought to have been written by Christian Petzold.
It was altered by 1940s bandleader Freddy Martin from the original 3/4 time signature to 4/4, and he released it as an instrumental under the name A Lover’s Concerto. I can’t find a recording. The words for the pop song were written by Sandy Linzer and Denny Randell.