This listing has a lot of holes but I have a lot of information yet to enter. If you have information to share or corrections to make, please contact me! Thanks!
From the website of the Minnesota Music Academy, which was discontinued in 2006:
The Minnesota Music Awards recognize and celebrate the outstanding accomplishments within the Minnesota music community each year. MMA members participated in the award nomination and voting process, and receive free admission to the Awards Show which is held in accordance with the Icebreaker Music Conference.
1981: The Yammies (First Annual)
1991 No Awards
2004