well Mamma Mia! is just AMAZINGLY TERRIFIC BUT THAT DOESNT mean that every single other succssesful band has to make a musical out of their music... and also MAMMA MIA! should have won best musical because it was...
why not? if Mama Mia! opened in the same year with Lestat, Chitty Chitty Bang Bang, In My Life and Brooklyn, which all are original-based musicals. I would support Mama Mia win best musical with my whole heart.