Vicky Leandros, that year's Luxemburg entry for the Eurovision Song Contest (ending 4th). Also cut an English, German, Italian, Spanish and Dutch version. In 1960 Popp & Cour cowrote Tom Pillibi, winning that year's Eurovision Song Contest for France with Jacqueline Boyer.
Paul Mauriat [as Love Is Blue instrumental n°1 US]
Jeff Beck [idem]
Claudine Longet [Andy Williams' ex wife; hit US in spite of French lyrics]
Dells [in medley]
Like every year comes Christmas time, French bandleader Paul Mauriat gave the hits of '67 a violin treatment on a supermarket compilation. Obviously not the kind of release suspected to hold a potential n°1 US, the very only one for a French act.