In what year was the album “À c&oelig;ur ouvert” released by 4Keus?

In what year was the album “À cœur ouvert” released by 4Keus?: The album “À cœur ouvert” was released in 2018 by 4Keus, featuring 16 tracks.
What is the most successful song from the album “À cœur ouvert” by 4Keus?: “Petit à petit” is the biggest hit from the album “À cœur ouvert” by 4Keus.

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