 Hüsker Dü's more melodic take on hardcore struck a chord with college students, and various tracks from "Metal Circus", particularly Hart's "Diane", were put into rotation by dozens of campus radio stations across the US.Hart was tagged by observers as the "hippie" of the group due to his long hair and his propensity to drum with bare feet; biographer Michael Azerrad additionally noted that "the wide-eyed sincerity of his songs was far more San Francisco '67 than New York City '77", which contrasted with Mould's "incisively bitter" songs.As Hart and Mould developed as musicians and songwriters, an unspoken tension and competition arose in the band between them.