Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:6/8
K:C
['A GEG AGE GAB cde', 'ded c2'  
X:1
L:1/8
M:6/8
K:C
 A | GEG AGE | GAB cde | fec dcd | edc G2 A | GEG AGE | GAB cde | fed gec | ded c2 e |: fed agf | 
 efg G2 e | fec dcd | edc G2 A | GEG AGE | GAB cde | fed gec |1 ded c2 e :|2 ded c2 A ||  