Michael Grimm. During the fifth season of America's Got Talent, viewers were blown away by the soulful sound of singer-songwriter Michael Grimm, whose emotional voice and guitar talent made it clear he had star potential. His likability took him all the way through to the end of the competition, where he edged out singer Jackie Evancho to take home the top prize, and made good on his promise to use his winnings to build his beloved grandparents a house.