Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:4/4
K:D
['', 'FA (3AAA BAFA', 'B2 BcdB AFAB']  
X:1
L:1/8
M:4/4
K:D
 AG |: FA (3AAA BAFA | dABA dABA | FA (3AAA BAFA | dBAF E2 DE | FA (3AAA BAFA | dABA dABc | 
 (3ddd cd BAFD |1 EDEF D2 AG :|2 EDEF D2 de |: feed ef (3efe | fedB BA B2 | BcdB AFAB | AFDE FAde | 
 feed ef e2 | fedB BA B2 | BcdB AFAB |1 AFEF D2 de :|2 AFEF D2 AG ||  