The question is to ask my mother what song "Quietly I Miss You Under the Moonlight" is? "The Greatness of Heaven". According to Kuwo Music query: "Mom, I miss you quietly under the moonlight" are the lyrics in the song "The Big Sky", originally sung by Mao Amin, released on April 3, 2013, and part of the lyrics are: Mom Under the moonlight, I miss you quietly, the concern flowing quietly in my blood, your embrace, mother.