Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/4
Q:1/4=120
M:3/4
K:G
['(B/A/) G E D G B d', 'A G B A G2 G', 'e d']  
X:1
L:1/4
Q:1/4=120
M:3/4
K:G
"^Moderate""^A" | (B/A/) | G E D | G B d | e2 e | d B A || G B A | G2 G | G3- |"^fine" G2"^B" |: 
 B | (d2 B) | d e f | g2 |1 g | f e d | e f e | e d B | d3- | d2 :|2 a | a g e | e d B | B A G | 
 A3- |"^->A" A2 |]  