In what year was the album “Oi dai” released by Värttinä?

In what year was the album “Oi dai” released by Värttinä?: The album “Oi dai” was released in 1991 by Värttinä, featuring 9 tracks.
What is the most successful song from the album “Oi dai” by Värttinä?: “Miinan Laulu” is the biggest hit from the album “Oi dai” by Värttinä.

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