The song "Start Over" in 'ITAEWON CLASS OST Part. 2' displays a wide musical spectrum and is sung by Gaho whose charismatic and refreshing voice truly stands out. The song's highly addictive chorus was released in the drama trailer which hyped up the public's anticipation for the drama 'ITAEWON CLASS'. This song expresses how Park Sae Roy (Park Seo Joon), who dreams of "a life without compromise", and the other characters fight for their freedom with their individual values in an irrational world, in a light and cheerful manner.