Kai's first Solo album Kai' consists of six R & B-based songs that come up with a sensual dance line. The title song 'Mmh' is an R & B pop song with a simple yet addictive Melody on a minimalist track. The lyrics unravel the first person to the opposite person in a frank and confident tone. The song Memory Loss (Amnesia)' is an r&b trap song featuring attractive grooves and Melody. In the moment of love, all the other memories of the past were forgotten and I wanted to fill them with memories about my lover.