Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:9/8
K:D
['ecA ecA f2 e']  
X:1
L:1/8
M:9/8
K:D
 ddd fga gfe | ddd fga gfe | ddd fga gfe | ddd fga gfe | ecA ecA f2 e | ecA ecA f2 e | 
 ecA ecA f2 e | ecA ecA f2 e | dBA FED E2 A | dBA FED E2 A | dBA FED E2 A | dBA GFE D2 z ||  