Create a musical composition adhering to the provided thematic and alphabetical guidelines.
X:1
L:1/8
M:6/8
K:G
['D G2 GGFG AG z3']  
X:1
L:1/8
M:6/8
K:G
 D | G2 GGFG | AG z3 D | G2 GGFG | AG z3 G | d2 dccc | B2 BAcB/A/ | G2 ABBA | G2 A G2 |]  