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9권다시보기딸림7화음은무엇일까?빠르기말을배워볼까요?강약이바뀌었네?당김음!'라'부터시작해!라장조음계라장조연주하기라장조의주요3화음은무엇일까?라장조의딸림7화음을만들어볼까요?라장조음계와주요3화음·딸림7화음같은소리나는딴이름한소리변화하는빠르기말'내림나'부터시작해!내림나장조음계내림나장조연주하기내림나장조의주요3화음은무엇일까?내림나장조의딸림7화음을만들어볼까요?내림나장조음계와주요3화음·딸림7화음악센트의친구들을만나볼까요?