Dr.Simpson's acoustic sounds have the balmy warmth of a cool summer evening. The South Korean singer-songwriter shifts between soothing mid range harmonies and self-assured raps, mixing a breezy hip-hop element with folksy, reflective soft pop. "Handcream", his 2013 collaboration with the R&B singer SUMIN, spotlights funky organ piano and a crunchy neo-soul vibe reminiscent of The Roots, while "Look So Pretty" finds him joining K-pop vocalist J_ust for a suite of smooth rhymes and dulcet choruses.