Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:3/4
K:Dmin
['d2 d2', 'x2 [M:2/4][K:D] agfa agfa dcde', 'f e edce edce cBA^G A2'  
X:1
L:1/8
M:3/4
K:Dmin
 d2 d2 d2 | c2 c2 c2 | d2 d2 d2 | e2 e2 e2 | f2 f2 f2 | e2 e2 e2 | d2 e2 ^c2 | d2 d2 x2 :: 
[M:2/4][K:D] agfa | agfa | dcde | f3 f :: e | edce | edce | cBA^G | A2 A2 :|  