A instrumental became a big hit in 1968. “L’amour est bleu,” known in the US as “Love is Blue” was composed by André Popp with French lyrics by Pierre Cour. Brian Blackburn later wrote English lyrics. But it was an instrumental version by orchestra Paul Mariat that became the hit.
Paul Mariat did record soundtracks for a few French films but he really known for the vast number of records done by his orchestra. He has over 1000 songs recorded with the orchestra. “Love is Blue” is the only one of his songs to hit the US charts. Paul died in 2006.
“Love is Blue” was the number one song on the Billboard Hot 100 chart for 5 weeks (Feb. 4 – March 9). On the Cash Box record chart it was at #1 for 7 weeks (Feb. 4 – March 23).
Instrumentals are used differently on radio stations than vocals. First, the disk jockey can talk over the record to do things like tell what is up next or to say goodbye at the end of a show. They can also be used as a lead-up to news when time is short because you can fade out the instrumental at any time.