藍灰色的雪 No.4 Snow with Blue Gray Color
漫步灰色藕荷花田 No.5 Walking among gray lotus farm
夜灰月灰協奏曲 No.5 Gray night Gray Moon Concerto
艾綠交響樂 No.4 Symphony of Green Waves
夜灰月灰協奏曲 No.4 Gray night Gray Moon Concerto No.4