Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
M:6/8
K:D
['d cAG', 'd2 ue vf2 d fga afd d2'  
X:1
L:1/8
M:6/8
K:D
 vd/ue/ | f2 d cAG | A2 d cAG | F2 D D(ED) | F3 GED | ABA cAG | ABA A2 d | fed cAc | d3 d2 :| ue | 
 vf2 d d"^4"ed | fga afd | d2 =c cdc | efg gfe | fga agf | gfg efg | fed cAc | d3 d2 :|  