You might recognize him as the guy who sings the hook on Lupe Fiasco's "Superstar," but Matthew has certainly made his own mark on the music biz. While studying at Columbia College, both painting and music, he got in touch with Lupe. Between their partnership and the grassroots following he gathered playing Chicago coffee shops, he's now an internationally known musician. Check out our entire interview with Matthew on this Friday's "metromix" at 7, 8, and 9 p.m. For now, here he is performing "Days Like This" in Millenium Park...