Most at home on the operatic stage, Kim has explored various musical perspectives through the vast world of opera production, not only as a professional performer but also as an assistant stage manager. Through her first opera, Die Zauberflöte, she began to understand how musical composition and stage expression were more intense and intertwined than any other musical or performance genre. This formative experience led her to question how various elements in opera could work together to create a syncretic art form. Working as an assistant director in the opera, Don Giovanni, helped Kim start to understand what would be necessary for a career as an opera singer, both in terms of musical training but also in terms of understanding character development. Other professional credits include a showcase as the Fox in Janáček’s The Cunning Little Vixen, Gilda in Verdi's Rigoletto, Matilde in Rossini’s Guillaume Tell and Sophie in Strauss's Der Rosenkavalier. Kim has also appeared as a soloist with the SNU Orchestra, Hankyung Philharmonic and The Orchestra Now performing works by composers ranging from Mahler to Verdi.