Produce music compositions abiding by the stipulated structure and the presented musical idea.
X:1
L:1/4
M:4/4
K:Dmin
['a a'  
X:1
L:1/4
M:4/4
K:Dmin
|:"Dm" d a a a |"Gm" c' b a g |"Dm" f3/2 g/"A7" a/ g3/2 |"Dm" d4 ::"Bb" d' d' d' c' |"Bb" b a g f | 
"C" c' c' c' d' |"F" a3/2 b/"A7" a/g/f/e/ |"Dm" d a a a |"Gm" c' b a g |"Dm" f3/2 g/"A7" a/ g3/2 | 
"Dm" d4 :|  