Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/8
M:9/8
K:D
['FGA ABc d2', 'fed edc d2']  
X:1
L:1/8
M:9/8
K:D
 FGA ABc d2 A | FGA d2 f ecA | FGA ABc d2 B | ABc dAG FED :| fed edc d2 A | BcB ged cde | 
 fed edc d2 B | ABc dAG FED :|  