Appointment of a friend, the first single of the album title HIGH CLASS is calm piano and guitar are properly coordinated, and later feel the feeling of soft rock ballads of lyrical harmony, a close friend and the memories will last a vocal ballad that might recall gimdaeyeon only a unique voice and singing ability is well-balanced with color, anyone is popular tunes that can be loved, yet comfortable. With the Republic of Korea that are leading jeonhun mastering engineer and mixing engineer imchangdeok director participated this gave even more worthy of gracing the album is the title track in addition to the piano arrangement of the same song and instrumental versions only version is configured as a beautiful melody. And a total staff of about 110 people and actors have been designated mobilized black noir drama blockbuster action-type mega music video for Promise of friends and also has become a hot topic among the public.01 appointments with friends1) lyricists: Kim Min2) Composer: Kim Min3) arranger: Kim Min, imseongheon4) Performers: Kim Min, imseongheon, gimdaeyeon02 appointments with friends (piano ver.)1) lyricists: Kim Min2) Composer: Kim Min3) arranger: Kim Min, imseongheon4) Performers: Kim Min, imseongheon, gimdaeyeon03 appointments with friends (Inst.)1) Composer: Kim Min2) arranger: Kim Min, imseongheon3) Performers: Kim Min, imseongheon04 appointments with friends (piano ver.) (Inst.)1) Composer: Kim Min2) arranger: Kim Min, imseongheon3) Performers: Kim Min, imseongheon