In what year was the album “Hey Ho” released by SEKAI NO OWARI?

In what year was the album “Hey Ho” released by SEKAI NO OWARI?: The album “Hey Ho” was released in 2016 by SEKAI NO OWARI, featuring 2 tracks.
What is the most successful song from the album “Hey Ho” by SEKAI NO OWARI?: “Hey Ho” is the biggest hit from the album “Hey Ho” by SEKAI NO OWARI.

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