Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:2/2
K:D
['ADFD ADGB ADFD G2', 'F2 AF', 'A2 Ac B2']  
X:1
L:1/8
M:2/2
K:D
 dB | ADFD ADGB | ADFD G2 GB | ADFD ADGF | (3(EFE) cA G2 FG | ADFD ADGB | ADFD G2 FG | 
 A^GA=c BAB^c | dB=cA G2 || (AG) | F2 AF cFAG | F2 cA G2 AG | F2 AF cFAc | dB=cA G2 AG | 
 F2 AF cFAG | F2 cA G2 (3(ABc) | dfdc dc (3(ABc) | dB=cA G2 || (dB) | A2 Ac B2 Bd | ABAF G2 dB | 
 A2 Ac B2 Bc | dB=cA G2 dB | AFAc BGBd | ABAF G2 (3(ABc) | dfec dc (3(ABc) | dB=cA G2 |]  