Jean François Michel
Yves Roze, better known as Jean-François Michael is a French singer. Between 1963 and 1968, he sang under his birth name Yves Roze. In 1968, Michel Berger (under his real name Michel Hamburger) wrote "Adieu jolie Candy" that was a hit for Jean-François Michael. It sold over one million copies, and was awarded a gold disc.
Under the new name Jean-François Michael, sometimes the "e" in Michael was written with the umlaut on the "e" as in Jean-François Michaël, he released three albums between 1968 and 1972, and a number of singles, but struck by a grave illness, he abandoned his musical career. He came back in 1975, but as a music director and record producer.
Read more at https://en.wikipedia.org/wiki/Jean-François_Michael