Compose a piece of music following the specified structure and theme.
X:1
L:1/8
M:4/4
K:D
['DCDE =FEFA ^A=A^Ad cdeg =fdge afed ced_B', '=fefd A2'  
X:1
L:1/8
M:4/4
K:D
 DCDE =FEFA | ^A=A^Ad cdeg | =fdge afed | ced_B A2 AG | FG (3AGF GABA | ^GBed cba=g | 
 (3fga fd Bgec | d2 dc d2 :| =fefd A2 d=c | ^A=A^AG D2 G=A | ^A=A^AG E=C=cA | AG=FA =c2 (3cde | 
 =fefd A2 ^fg | agfa g2 ag | (3fga fd Bgec | d2 dc d2 :|  