Develop a piece of music conforming to the stated structure and theme.
X:1
L:1/8
Q:1/4=120
M:2/2
K:Ddor
['D d2 c', 'd2 defg afdg e>dcg ecge defg afgf', 'gcge c(gge) dBGB c(gge) gcge a^fge dBGB', 'ceAe ceAe d/c/B/A/ GB ceAe ceAg a^fge'  
X:1
L:1/8
Q:1/4=120
M:2/2
K:Ddor
 D d2 c defd | c_B AG FGEC | D d2 c defg | e>dce d/d/d d2 :: defg afdg | e>dcg ecge | defg afgf | 
 ecge d/d/d d2 :|[M:2/2][K:Amin][Q:1/4=120] c(gge) gcge | c(gge) dBGB | c(gge) gcge | a^fge dBGB :: 
 ceAe ceAe | ceAe d/c/B/A/ GB | ceAe ceAg | a^fge dBGB :|  