Chollima on the Wing

천리마 달린다 (when Google-Translated: run; English: Chollima on the Wing; McCune–Reischauer/Romanization of Korean: chŏllima tallinta) is a North Korean song composed by the Poranbo Electronic Ensemble about the Chollima Movement in North Korea. This song is used in Assets with Liabilities as an occasional background music for Retsuko, and as her favourite song which she sings most of the time.