In what year was the album “Amiga” released by Mary Terezinha?

In what year was the album “Amiga” released by Mary Terezinha?: The album “Amiga” was released in 1981 by Mary Terezinha, featuring 12 tracks.
What is the most successful song from the album “Amiga” by Mary Terezinha?: “Gaita e Violão” is the biggest hit from the album “Amiga” by Mary Terezinha.

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